CN109495526A - A kind of file transmitting method, device, system, electronic equipment and storage medium - Google Patents

Abstract

Embodiments of the present invention provide a method, device, system, electronic device, and storage medium for sending a message. The method is applied to a load balancing device in a cloud computing network, where the cloud computing network includes: a switch, a load balancing device, and a centralized type session synchronization device, the method includes: receiving a target data message sent by a switch; searching for a session corresponding to the target data message in a locally stored session, and if the search fails, sending the target data message through the switch Sending to the centralized session synchronization device, so that the centralized session synchronization device sends the target data message to the application server group according to the locally stored session. In the embodiment of the present invention, when the load balancing device fails, the centralized session synchronization device sends the data packets for which the corresponding session is not found in the load balancing device to the application server group, which reduces the consumption of CPU resources and improves the load balancing device. The ability to send data packets.

Description

A message sending method, device, system, electronic device and storage medium

technical field

The present invention relates to the field of communication technologies, and in particular, to a message sending method, device, system, electronic device and storage medium.

Background technique

In the cloud computing network, the load balancing device, as the entrance of user traffic, plays a pivotal role in its performance and stability. The traditional technology deploys the load balancing device in the active and standby mode to achieve high availability. Because the load balancing device forwards user traffic in a stateful manner, that is, the user traffic is forwarded based on the session. Therefore, the active and standby load balancing devices need to have session synchronization. Function. In order to scale the performance of the load balancing device horizontally, most cloud vendors deploy the load balancing device in cluster mode, and implement the Equal-Cost Multipath Routing (ECMP) algorithm in the switch to realize the forwarding of user traffic on multiple load balancing devices. , so that it can support the load balancing device with the maximum number of routes in the switch to forward user traffic. The advantage of this deployment method is that it is simple, reliable, and convenient for horizontal expansion.

However, when the traditional load balancing device works in the active-standby mode, the biggest problem is that its scalability is poor, and it cannot support the traffic forwarding requirements of a large number of users, so it is difficult to apply to the cloud computing environment. When the load balancing device is deployed in cluster mode, the traditional switch uses the ECMP algorithm to forward user traffic through the load balancing device. When the number of load balancing devices in the load balancing device cluster changes, the switch will re-use the ECMP algorithm for route allocation , the path of most user traffic will change, which will cause most user data packets to find their corresponding sessions, and thus fail to forward, and the more serious result is that the connection between the user and the load balancing device cluster will flicker. It will bring great inconvenience to the user's network usage and experience.

Aiming at the problem that user traffic cannot be forwarded due to the change in the number of load balancing devices in cluster mode, the existing solution is to achieve full session synchronization between each load balancing device through switches, that is, each load balancing device in the cluster. All session information of all other load balancing devices in the cluster is available to ensure that when one or several load balancing devices in the cluster fail, other load balancing devices can still forward user data packets that should be forwarded by the faulty load balancing device. Although the application of the above method can ensure that when one or several load balancing devices in the cluster fail, it can still realize the forwarding of data packets that the faulty device is responsible for. However, since each load balancing device needs to store the session information of all devices in the cluster, As a result, more CPU resources are occupied by each load balancing device, and the session management capability of a single load balancing device will be limited, thereby limiting the ability of the entire cluster to forward user traffic, and the above method requires the switch to support the multicast function.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a message sending method, apparatus, system, electronic device and storage medium, so as to avoid the CPU load caused by the need to store session information of all load balancing devices in the cluster for the load balancing devices in the cloud computing network. Excessive resource usage improves the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic. The specific technical solutions are as follows:

The embodiment of the present invention discloses a message sending method, which is applied to a load balancing device in a cloud computing network. The cloud computing network includes: a switch, a load balancing device and a centralized session synchronization device. The above method includes:

Receive the target data message sent by the switch;

In the session stored locally on the load balancing device that has received the target data packet, search for the session corresponding to the target data packet; if the search fails, send the target data packet to the switch, so that the switch sends the target data packet to The centralized session synchronization device, so that the centralized session synchronization device sends the target data packet to the application server group according to the locally stored session of the centralized session synchronization device, wherein the locally stored session of the centralized session synchronization device is: Sessions obtained from the synchronization of various load balancing devices in the cloud computing network.

The embodiment of the present invention discloses a message sending method, which is applied to a centralized session synchronization device in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. The method includes:

Receive the target data packet sent by the switch; wherein, the target data packet is sent to the switch by the load balancing device that has received the target data packet after not finding the session corresponding to the target data packet in the session stored locally by itself target data message;

The target data packet is sent to the application server farm according to the locally stored session of the centralized session synchronization device.

The embodiment of the present invention discloses a message sending method, which is applied to a switch in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. The above method includes:

Receive the target data message;

Route allocation to the target data packet, determine the load balancing device for forwarding the target data packet, and send the target data packet to the determined load balancing device, so that the determined load balancing device is in the determined load balancing device. Find the session corresponding to the target data packet in the session stored locally on the load balancing device;

Receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device, so that the centralized session synchronization device The session is to send the target data message to the application server group, wherein the session stored locally by the centralized session synchronization device is: the session obtained from the synchronization of each load balancing device in the cloud computing network.

An embodiment of the present invention discloses a message sending device, which is applied to a load balancing device in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. The device includes:

The first receiving module is used for receiving the target data message sent by the switch;

a first search module, configured to search for a session corresponding to the target data packet in the session stored locally by the load balancing device that has received the target data packet;

The first sending module is configured to send the target data packet to the switch when the session corresponding to the target data packet fails to be searched, so that the switch sends the target data packet to the centralized session synchronization device, thereby synchronizing the centralized session The device sends the target data message to the application server group according to the locally stored session of the centralized session synchronization device, wherein the locally stored session of the centralized session synchronization device is: obtained from each load balancing device in the cloud computing network synchronously session.

An embodiment of the present invention discloses a message sending device, which is applied to a centralized session synchronization device in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. The device includes:

The eighth receiving module is used for receiving the target data message sent by the switch; wherein, the target data message is the one corresponding to the target data message that is not found in the session stored locally by the load balancing device that has received the target data message After the session, the target data message sent to the switch;

The fourth sending module is configured to send the target data message to the application server group according to the session stored locally in the centralized session synchronization device.

An embodiment of the present invention discloses a message sending device, which is applied to a switch in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. The device includes:

The second receiving module is used to receive the target data message;

The first distribution module is configured to perform route distribution on the target data packet, determine a load balancing device for forwarding the target data packet, and send the target data packet to the determined load balancing device, so that the determined load balancing device The balancing device searches for the session corresponding to the target data packet in the locally stored session of the determined load balancing device;

The third receiving module is configured to receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device, so that the centralized session synchronization device can The locally stored session of the session synchronization device sends the target data packet to the application server group, wherein the locally stored session of the centralized session synchronization device is: the session obtained from each load balancing device in the cloud computing network synchronously.

The embodiment of the present invention discloses a message sending system, the system includes: a switch, a load balancing device and a centralized session synchronization device; wherein,

The switch is used to receive the target data packet; perform route distribution on the target data packet, determine a load balancing device for forwarding the target data packet; send the target data packet to the determined load balancing device;

The load balancing device is used to receive the target data packet sent by the switch; in the session stored locally on the load balancing device, search for the session corresponding to the target data packet; if the search fails, send the target data packet to the switch;

The switch is further configured to receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device;

The centralized session synchronization device is used to receive the target data packet sent by the switch, and send the target data packet to the application server group according to the locally stored session of the centralized session synchronization device, wherein the local storage of the centralized session synchronization device The session is: the session obtained synchronously from each load balancing device in the above system.

An embodiment of the present invention discloses an electronic device. The electronic device is a load balancing device in a cloud computing network. The cloud computing network includes a switch, a load balancing device, and a centralized session synchronization device. The load balancing device includes a processor and a memory. ;

memory for storing computer programs;

The processor is configured to implement the above method steps for sending packets applied to a load balancing device in a cloud computing network when executing the program stored in the memory.

An embodiment of the present invention further discloses a computer-readable storage medium, where the computer-readable storage medium is a storage medium of a load balancing device in a cloud computing network, where the cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device , a computer program is stored in the computer-readable storage medium, and when the computer program is executed by the processor, the above-mentioned method steps for sending a packet applied to a load balancing device in a cloud computing network are implemented.

Embodiments of the present invention also provide a computer program product containing instructions, which, when running on a computer, cause the computer to execute the above-mentioned packet sending method applied to a load balancing device in a cloud computing network.

Embodiments of the present invention also provide a computer program, which, when running on a computer, causes the computer to execute the above-mentioned method for sending packets applied to a load balancing device in a cloud computing network.

An embodiment of the present invention discloses an electronic device. The electronic device is a centralized session synchronization device in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. The centralized session synchronization device includes: processor and memory;

memory for storing computer programs;

The processor is configured to implement the above-mentioned method and steps of the message sending applied to the centralized session synchronization device in the cloud computing network when executing the program stored in the memory.

The embodiment of the present invention also discloses a computer-readable storage medium, where the computer-readable storage medium is a storage medium of a centralized session synchronization device in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized In the session synchronization device, a computer program is stored in the computer-readable storage medium, and when the computer program is executed by the processor, the above-mentioned method and steps of the message sending applied to the centralized session synchronization device in the cloud computing network are implemented.

Embodiments of the present invention also provide a computer program product containing instructions, which, when running on a computer, cause the computer to execute the above-mentioned message sending method applied to a centralized session synchronization device in a cloud computing network.

Embodiments of the present invention also provide a computer program, which, when running on a computer, causes the computer to execute the above-mentioned packet sending method applied to a centralized session synchronization device in a cloud computing network.

The embodiment of the present invention discloses an electronic device, the electronic device is a switch in a cloud computing network, the cloud computing network includes: a switch, a load balancing device and a centralized session synchronization device, and the switch includes: a processor and a memory;

memory for storing computer programs;

The processor is configured to implement the above-mentioned method steps for sending a message applied to a switch in a cloud computing network when executing the program stored in the memory.

The embodiment of the present invention also discloses a computer-readable storage medium, where the computer-readable storage medium is a storage medium of a switch in a cloud computing network, and the cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device, A computer program is stored in the computer-readable storage medium, and when the computer program is executed by the processor, the above-mentioned method steps for sending a packet applied to a switch in a cloud computing network are implemented.

Embodiments of the present invention also provide a computer program product containing instructions, which, when running on a computer, cause the computer to execute the above-mentioned packet sending method applied to a switch in a cloud computing network.

Embodiments of the present invention also provide a computer program, which, when running on a computer, causes the computer to execute the above-mentioned method for sending a packet applied to a switch in a cloud computing network.

In the message sending method, device, system, electronic device, storage medium, computer program product including instructions, and computer program provided by the embodiments of the present invention, after the load balancing device in the cloud computing network receives the target data message sent by the exchange , Find the session corresponding to the target data packet locally on the load balancing device, if not found, send the target data packet to the switch, and the switch will send the target data packet to the centralized session synchronization device, and the centralized session synchronization The device sends the target data packet to the application server farm. It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device realizes the sending of the target data packet, so as to avoid all load balancing devices in the cloud computing network It is necessary to store the session information of all load balancing devices in the cluster and cause excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic, and the switch only needs to have the unicast function to achieve this. Session synchronization. Of course, it is not necessary for any product or method to implement the present invention to simultaneously achieve all of the advantages described above.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1a is a first schematic flowchart of a message sending method provided by an embodiment of the present invention;

Figure 1b is a schematic diagram of routing allocation to target data packets according to the equal-cost routing-hash algorithm when the load balancing device cluster is not faulty;

Figure 1c is a schematic diagram of the switch re-routing the target data packet according to the equal-cost routing-hash algorithm when the load balancing device cluster fails;

FIG. 2 is a second schematic flowchart of a message sending method provided by an embodiment of the present invention;

3 is a third schematic flowchart of a message sending method provided by an embodiment of the present invention;

4a is a fourth schematic flowchart of a message sending method provided by an embodiment of the present invention;

4b is a fifth schematic flowchart of a message sending method according to an embodiment of the present invention;

4c is a sixth schematic flowchart of a message sending method provided by an embodiment of the present invention;

FIG. 5 is a first structural schematic diagram of a message sending apparatus provided by an embodiment of the present invention;

6 is a schematic diagram of a second structure of a message sending apparatus provided by an embodiment of the present invention;

FIG. 7 is a third schematic structural diagram of a message sending apparatus according to an embodiment of the present invention;

8a is a schematic diagram of a fourth structure of a message sending apparatus according to an embodiment of the present invention;

FIG. 8b is a fifth structural schematic diagram of a message sending apparatus provided by an embodiment of the present invention;

FIG. 8c is a sixth schematic structural diagram of a message sending apparatus provided by an embodiment of the present invention;

9a is a schematic structural diagram of a system for sending a message according to an embodiment of the present invention;

9b is a schematic flowchart of a message sending system according to an embodiment of the present invention sending a target data message to an application server group;

FIG. 9c is a schematic flowchart of a load balancing device sending a control message to a centralized session synchronization device through a switch in a message sending system provided by an embodiment of the present invention;

10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;

11 is a schematic structural diagram of another electronic device according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of another electronic device according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

A packet sending method provided by an embodiment of the present invention can be applied to a load balancing device or switch in a cloud computing network, and the cloud computing network may include: a switch, a load balancing device, and a centralized session synchronization device. The load balancing device may be deployed in a cluster mode in the cloud computing network, that is, the number of load balancing devices is at least two.

The embodiment of the present invention provides a method and steps for sending a data packet when the number of centralized session synchronization devices is one.

In an implementation manner of the present application, in order to improve the data packet forwarding capability of the load balancing device cluster and expand the data packet sending capability of the centralized session synchronization device, the number of centralized session synchronization devices may be multiple, and correspondingly , the Internet Protocol (IP) address of each centralized session synchronization device can be configured in each load balancing device, so that when a centralized session synchronization device is upgraded or fails, the load balancing device can choose other A centralized session synchronization facility to send data packets or synchronize sessions to it.

In this embodiment of the present invention, the switch may be replaced by a router.

In this embodiment of the present invention, the load balancing device may be a Layer 4 load balancing device or a Layer 7 load balancing device. The four-layer load balancing device works on the fourth layer (transport layer) of the Open System Interconnection (OSI) model, and forwards the data packet by analyzing the destination address and port of the data packet. The seven-layer load balancing device works at the seventh layer (application layer) of the OSI model. In addition to analyzing the destination address and port of the data packet, it also analyzes the application layer information such as the Uniform Resource Locator (URL) of the data packet. Forward data packets.

In this embodiment of the present invention, the load balancing device may locally store: the session established between the client and the application server group.

In the embodiment of the present invention, the centralized session synchronization device may locally store: the session obtained by synchronization from each load balancing device in the above-mentioned cloud computing network.

In this embodiment of the present invention, the centralized session synchronization device may include multiple CPU cores, and any one of the CPU cores may be selected as the main CPU core; the centralized session synchronization device may further include a memory.

In the embodiment of the present invention, it is necessary to ensure that the load balancing device and the centralized session synchronization device are reachable by route.

The present invention will be described in detail below through specific embodiments.

1a is a schematic flowchart of a first method for sending a message according to an embodiment of the present invention. The method is applied to a load balancing device in a cloud computing network, and includes the following steps:

S101: Receive a target data packet sent by a switch.

In a cloud computing network, when a client needs to send a target data packet to an application server group, it first sends the target data packet to the switch, and the switch assigns the route to the target data packet, that is, the switch determines the target data packet for forwarding. The load balancing device of the data packet, and then the switch sends the target data packet to the determined load balancing device, and the determined load balancing device receives the target data packet sent by the switch and forwards it to the application server group. The application server group is a server group used to provide application services for clients, and may include multiple application servers.

It can be understood that the determined load balancing device is a certain load balancing device among multiple load balancing devices in the cloud computing network.

In this embodiment, after receiving the target data packet, the switch may perform route allocation to the target data packet according to a preset Equal-Cost Multipath Routing hash (ECMP-hash) algorithm, that is, according to the preset Equal-Cost Multipath Routing hash (ECMP-hash) algorithm The ECMP-hash algorithm determines the load balancing device for forwarding the target data packet among multiple load balancing devices in the cloud computing network. Of course, this application only takes the above as an example for description, and the method for the switch to perform route allocation to the target data packet is not limited to this.

S102, in the locally stored session of the load balancing device that has received the target data packet, search for a session corresponding to the target data packet.

In this embodiment, the protocol of the load balancing device at the transport layer is generally Transmission Control Protocol (TCP). Therefore, the load balancing device forwards the target data packet in a stateful manner, that is, the load balancing device forwards the target data packet based on the target data packet. The session corresponding to the message forwards the target data message.

It can be understood that if the switch receives the target data packet sent by the client, before the switch receives the target data packet sent by the client, the client and the application server group have established the target data through the three-way handshake signal. The session corresponding to the packet.

Specifically, for the established session, if the load balancing device forwards the synchronous (SYN) packet in the three-way handshake signal generated when the session is established, the load balancing device can, when the session is established, The balancing device locally stores the established session, and then forwards the target data packet to the application server group based on the stored session. For example, the load balancing device may locally store the quintuple information of the session established above. The quintuple information of the session is: source IP address, source port, destination IP address, destination port and transport layer protocol type of the session. It can be understood by those skilled in the art that one target data packet corresponds to only one session.

In this embodiment, the target data packet may include quintuple information of the corresponding session. Therefore, after receiving the target data packet sent by the switch, the load balancing device can read the quintuple information contained in the target data packet. According to the quintuple information, in the session stored locally by the load balancing device, search for five A session whose tuple information is the same as the five-tuple information contained in the target data packet. Of course, this application only uses the above as an example for description, and the method for the load balancing device to search for the session corresponding to the target data packet in the session stored locally by the load balancing device is not limited to this.

S103, if the session corresponding to the target data packet is not found in the session stored locally by the load balancing device that has received the target data packet, send the target data packet to the switch, so that the switch sends the target data packet to the centralized session synchronization device, so that the centralized session synchronization device sends the target data message to the application server group according to the locally stored session of the centralized session synchronization device.

In practical applications, multiple load balancing devices in a cloud computing network constitute a load balancing device cluster. In this cluster, each node represents a load balancing device. When the number of nodes in the load balancing device cluster changes, for example, a certain Or some nodes fail, or the number of nodes increases. Correspondingly, if the switch detects that the number of next hops decreases or increases, the switch will respond to the received data packets according to the preset ECMP-hash algorithm or through other methods. Re-distribution of routes leads to changes in the paths of most data packets.

Further, after the switch sends the data packet to the load balancing device determined after re-routing it, the determined load balancing device may not be able to find the session corresponding to the data packet in the locally stored sessions. As a result, the forwarding of the data packet fails.

For example, as shown in Figure 1b, it is assumed that there are 4 load balancing devices in the cloud computing network that can work normally, and the sessions corresponding to target data packet 1 to target data packet 4 are session 1 to session 4, respectively. Device 1 to load balancing device 4 store session 1 to session 4 respectively. After receiving the target data packet 1 to the target data packet 4 in turn, the switch performs route allocation on the target data packet 1 to the target data packet 4 according to the preset ECMP-hash algorithm. The result of the route allocation is: load balancing Device 1 to load balancing device 4 forward target data packet 1 to target data packet 4 respectively.

As shown in Figure 1c, if the number of nodes in the load balancing device cluster changes, taking a load balancing device down as an example, for example, load balancing device 1 goes down, at this time, the switch detects that the number of next hops decreases by 1, Then the switch re-distributes the routes to the received target data packets 1 to 4 according to the preset ECMP-hash algorithm. It is assumed that the result of the route allocation is: the load balancing device 2 to the load balancing device 4 forward the targets respectively. The data packets 1 to 3 are forwarded by the load balancing device 2 to the target data packet 4 . Then, none of the load balancing device 2 to the load balancing device 4 can find the session corresponding to the target data packet to be forwarded in the respective locally stored sessions, resulting in failure to forward the target data packet.

When the load balancing device does not find the session corresponding to the target data packet in the session stored locally on the load balancing device, and because the switch does not store the target data packet, the load balancing device can send the target data packet to the switch. So that the switch sends the received target data message to the centralized session synchronization device.

Specifically, in order to mark the target data packets with different identifiers at different levels of the OSI model, the load balancing device can encapsulate the target data packets, and send the encapsulated target data packets to the switch, so that the switch will receive the target data packets. The received encapsulated target data packet is sent to the centralized session synchronization device.

For example, the load balancing device may encapsulate the target data packet into a virtual extensible local area network (Virtual Extensible Local Area Network, vxlan) format. After the switch receives the target data packet encapsulated in vxlan format sent by the load balancing device, it does not decapsulate or parse the encapsulated target data packet, but directly encapsulates the target data packet in vxlan format. messages to a centralized session synchronization facility. Of course, this application only takes the above as an example for description, and the method for encapsulating the target data packet by the load balancing device is not limited to this.

In this embodiment, the locally stored session of the centralized session synchronization device is: the session obtained from the synchronization of each load balancing device in the cloud computing network. It should be noted that session synchronization from each load balancing device of a cloud computing network to a centralized session synchronization device may be implemented by using the prior art.

As a preferred embodiment of the present invention, the centralized session synchronization device sends the target data packet to the application server group according to the locally stored session of the centralized session synchronization device, which may include steps S103a-S103c:

S103a, the main CPU core of the centralized session synchronization device determines the first session corresponding to the target data packet from the locally stored sessions of the centralized session synchronization device.

Specifically, if the centralized session synchronization device receives the encapsulated target data packet sent by the switch, first, the main CPU core can decapsulate the encapsulated target data packet, and then the main CPU core can read the encapsulated target data packet. The quintuple information of the corresponding session contained in the target data packet, according to the quintuple information, determine the quintuple information and the quintuple information contained in the target data packet in the session stored locally in the centralized session synchronization device. Sessions with the same tuple information.

S103b, the main CPU core of the centralized session synchronization device performs hash calculation on the attribute of the first session according to a preset hash algorithm, and selects a target CPU core from the CPU cores of the centralized session synchronization device according to the calculation result.

After the main CPU core of the centralized session synchronization device determines the first session corresponding to the target data packet from the locally stored sessions of the centralized session synchronization device, the main CPU core can perform hashing on the attributes of the first session according to the symmetric hash algorithm. According to the hash characteristic value of the first session, and according to the preset selection rule, select from other CPU cores except the main CPU core in the local centralized session synchronization device The target CPU core corresponding to the first session.

It should be noted that the target CPU core is a certain CPU core among other CPU cores other than the main CPU core in the local centralized session synchronization device. The first dialogue corresponds to only one target CPU core. The preset selection rule may be preset according to actual needs, or may be set according to experience, which is not limited in the present invention.

S103c, the main CPU core of the centralized session synchronization device schedules the target CPU core of step S103b, so that the target CPU core of step S103b sends the target data message to the application server group according to the first session.

After determining the first session corresponding to the target data packet and selecting the target CPU core corresponding to the first session, the main CPU core of the centralized session synchronization device can schedule the target CPU core to transfer the target data packet according to the first session. Sent to the application server farm.

In this preferred embodiment, the main CPU core of the centralized session synchronization device first determines the first session corresponding to the target data packet, and then selects the target CPU core corresponding to the first session, and the first session corresponds to a unique target CPU nuclear. In this way, as long as the session corresponding to a data packet is the first session, the target CPU core corresponding to the first session sends the data packet to the application server group, that is, the corresponding session belongs to the same session. Different data packets are sent to the application server group by the same CPU core, which realizes the lock-free processing of data packets and improves the session management capability of the centralized session synchronization device and the transmission efficiency of the number of packets.

Based on the above preferred embodiment, in an implementation manner, after step S103c, the target CPU core in step S103b may update the timeout start time of the first session to the completion time of sending the target data message.

Further, the target CPU core of step S103b may detect whether the session timeout duration of the first session reaches the preset duration according to the updated timeout start time of the first session, and if the session timeout duration of the first session reaches the preset duration , destroys the first session.

Specifically, in order to save the available storage space of the centralized session synchronization device and improve the management capability of the centralized session synchronization device for the session synchronized to the local session of the centralized session synchronization device, the target CPU core can periodically detect the session of the first session The timeout duration, the timeout duration of the first session is the duration from the timeout start time of the first session to the current moment. If the session timeout duration of the first session reaches the preset duration, it is considered that the TCP connection corresponding to the first session has been disconnected, and the target CPU core can destroy the first session.

In the packet sending method provided by the embodiment of the present invention, after receiving the target data packet sent by the exchange, the load balancing device searches for the session corresponding to the target data packet locally on the load balancing device. The switch sends the target data packet to the centralized session synchronization device, and the centralized session synchronization device sends the target data packet to the application server group. It can be seen that, in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device realizes the sending of the target data packet, so as to avoid all load balancing devices in the cloud computing network It is necessary to store the session information of all load balancing devices in the cluster and cause excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

FIG. 2 is a second schematic flowchart of a packet sending method provided by an embodiment of the present invention. The method is applied to a load balancing device in a cloud computing network, and includes the following steps:

S201: Receive a target data packet sent by a switch.

S202, in the locally stored session of the load balancing device that has received the target data packet, search for a session corresponding to the target data packet.

S203, if the session corresponding to the target data packet is not found in the session stored locally by the load balancing device that has received the target data packet, send the target data packet to the switch, so that the switch sends the target data packet to the centralized session synchronization device, so that the centralized session synchronization device sends the target data message to the application server group according to the locally stored session of the centralized session synchronization device.

In this embodiment, the above steps S201-S203 may be completely the same as the steps S101-S103 in the embodiment shown in FIG. 1, respectively, and are not repeated here.

S204: Send a control packet to the centralized session synchronization device through the switch, so that the centralized session synchronization device performs information synchronization according to the control packet.

In this embodiment, the control message is a message used for information synchronization. Specifically, the control message may be a message that includes a session and enables the centralized session synchronization device to synchronize information according to the session. The control message may also be a message that includes a state of a session and enables the centralized session synchronization device to synchronize information according to the state.

As a preferred embodiment of the present invention, sending a control message to a centralized session synchronization device through a switch may include the following steps S204a and S204b:

S204a: Determine a session that meets a preset synchronization condition among the sessions stored locally by the load balancing device as a to-be-synchronized session.

As described in step S202, a session can be established between the client and the application server, and the load balancing device can locally store the established session in the load balancing device. For example, the load balancing device may locally store the quintuple information of the session established above. It can be understood that, according to the needs of the client, multiple sessions may be established between the client and the application server group at different times, and each load balancing device may also store multiple established sessions.

It can be understood by those skilled in the art that, among the sessions stored locally by the load balancing device, a session with a shorter duration and a smaller number of forwarded data packets may be classified as a short connection session. The duration of the session refers to the duration from the moment when the session is established to the current moment, and the number of data packets forwarded by the session refers to the number of data packets forwarded by the session during the duration of the session. The number of data packets sent by the group. In actual use, in order to reduce the pressure on the centralized session synchronization device to process the sessions synchronized by each load balancer in the cloud computing network to the local session of the centralized session synchronization device, each load balancer does not need to store the local short connection session of the load balancer. Sync to a centralized session sync facility. Therefore, a synchronization condition can be preset, and each load balancing device determines a session that satisfies the preset synchronization condition from the sessions stored locally by the load balancing device, and the session that meets the preset synchronization condition is that each load balancing device needs to synchronize Sessions to a centralized session synchronization device.

In an implementation manner, the preset synchronization conditions may include a first preset sub-synchronization condition and a second preset sub-synchronization condition. in,

The first preset sub-synchronization condition may be: the duration of the session is greater than or equal to the preset value of the session duration.

The second preset sub-synchronization condition may be: the number of data packets forwarded through the session exceeds or equals to a preset value of the number of data packets forwarded.

The above-mentioned preset value of the session duration and the preset value of the forwarding number of data packets can be set according to actual needs, and can also be set according to experience, which is not limited in the present invention.

For example, it is assumed that the preset session duration is set to 2s, and the preset number of data packet forwarding is set to 10. If the duration of session 1 is 5s, and the number of data packets forwarded by session 1 is 20, session 1 is a session that satisfies the above-mentioned preset synchronization condition. If the duration of session 2 is 5s, and the number of data packets forwarded by session 2 is 8, then session 2 is a session that does not meet the above-mentioned preset synchronization conditions.

Of course, this application only takes the above as an example for description, and the preset synchronization conditions are not limited to this.

It can be understood that the load balancing device may store a session established between a client and an application server group at any time. Therefore, the load balancing device may sequentially scan the sessions stored locally on the load balancing device according to a preset scanning period, thereby periodically determining the sessions locally satisfying the preset synchronization conditions of the load balancing device as the to-be-synchronized sessions. In a specific implementation manner, the load balancing device may scan all the sessions stored locally on the load balancing device in sequence during the first scan, and when it is not scanned for the first time, the local load balancing device is not determined to meet the preset requirements. Sessions of synchronization conditions are scanned sequentially. Of course, this application only uses the above as an example for description, and the method for the load balancing device to determine the session that satisfies the preset synchronization condition among the sessions stored locally on the load balancing device is not limited to this.

S204b, send a control packet including the session to be synchronized to the centralized session synchronization device through the switch.

After the load balancing device determines the to-be-synchronized session that meets the preset synchronization conditions among the sessions stored locally on the load balancing device, it can send a control packet containing the to-be-synchronized session to the switch, and the switch will receive the received session containing the to-be-synchronized session. Control packets are sent to a centralized session synchronization device. It should be noted that a control packet contains only one session to be synchronized.

Specifically, the load balancing device may encapsulate the control packet containing the session to be synchronized, and send the encapsulated control packet containing the session to be synchronized to the switch, and the switch will receive the encapsulated control packet containing the session to be synchronized. Control packets are sent to a centralized session synchronization device.

For example, the load balancing device may encapsulate the control packet containing the session to be synchronized into the vxlan format. After the switch receives the control packet containing the session to be synchronized and encapsulated in vxlan format sent by the load balancing device, it does not decapsulate or parse the encapsulated control packet containing the session to be synchronized, but directly converts the encapsulated control packet containing the session to be synchronized. The control packet containing the session to be synchronized encapsulated in vxlan format is sent to the centralized session synchronization device. Of course, this application only takes the above as an example for description, and the method for encapsulating the control packet including the session to be synchronized by the load balancing device is not limited to this.

As another preferred embodiment of the present invention, sending a control packet to the centralized session synchronization device through the switch may include the following step S204c:

S204c, detecting whether the state of the target session changes; if it is detected that the state of the target session changes, send a control packet including the state of the target session to the centralized session synchronization device through the switch. The target session is: a local session that has been synchronized to the centralized session synchronization device.

In this embodiment, the status of the session in the TCP connection is shown in Table 1.

Table 1

The state of the target session may be any of the above TCP state machines, and the state of the target session is sent to the load balancing device in the form of a packet through the switch. Therefore, the load balancing device detects that the state of the target session occurs. After the change, a control packet including the changed state of the target session can be sent to the switch, and the switch sends the received control packet including the changed state of the target session to the centralized session synchronization device. It should be noted that a control packet contains only one changed state of the target session.

Specifically, the load balancing device may encapsulate the control packet containing the changed state of the target session, and send the encapsulated control packet containing the changed state of the target session to the switch, and the switch will encapsulate the received encapsulated control packet. The control message containing the changed state of the target session is sent to the centralized session synchronization device.

For example, the load balancing device may encapsulate a control packet containing the changed state of the target session into vxlan format. After the switch receives the control packet that contains the changed state of the target session and is encapsulated in vxlan format and sent by the load balancing device, it does not decapsulate or parse the encapsulated control packet that contains the changed state of the target session. , but directly send the control message encapsulated in vxlan format containing the changed state of the target session to the centralized session synchronization device. Of course, this application only takes the above as an example for description, and the method for encapsulating the control packet containing the changed state of the target session by the load balancing device is not limited to this.

It should be noted that, there is no strict execution time sequence between step S204c and steps S204a-S204b. For a load balancing device in a cloud computing network, as long as the load balancing device stores a session, and the session is a session that satisfies the preset synchronization conditions, it can send a control containing the session to the centralized session synchronization device through the switch. message. As long as the load balancing device detects that the state of the target session changes, it can send a control packet including the changed state of the target session to the centralized session synchronization device through the switch.

Correspondingly, in an implementation manner, the centralized session synchronization device performs information synchronization according to the control message, which may include steps S204d-S204f:

S204d, the main CPU core of the centralized session synchronization device determines the second session corresponding to the control packet.

Specifically, if the centralized session synchronization device receives the encapsulated control packet sent by the switch, first, the main CPU core can decapsulate the encapsulated control packet; then,

For the case where the control message is the control message in step S204b, the main CPU core can read the quintuple information of the session included in the control message, so as to determine the session included in the control message as the corresponding session of the control message. second session;

In the case where the control packet is the control packet in step S204c, the main CPU core may read the quintuple information of the target session, thereby determining the target session as the second session corresponding to the control packet.

S204e, the main CPU core of the centralized session synchronization device performs hash calculation on the attribute of the second session according to a preset hash algorithm, and selects a target CPU core from the CPU cores of the centralized session synchronization device according to the calculation result.

After the main CPU core of the centralized session synchronization device determines the second session corresponding to the control message, the main CPU core can perform hash calculation on the attributes of the second session according to the symmetric hash algorithm to obtain the hash feature of the second session. value; according to the hash feature value of the second session, according to a preset selection rule, select the target CPU core corresponding to the second session from other CPU cores except the main CPU core in the local centralized session synchronization device.

It should be noted that the target CPU core is a certain CPU core among other CPU cores other than the main CPU core in the local centralized session synchronization device. The second dialogue corresponds to only one target CPU core.

S204f, the main CPU core of the centralized session synchronization device schedules the target CPU core of step S204e to perform information synchronization according to the second session.

For the case where the second session is included in the control message in step S204b, after the main CPU core of the centralized session synchronization device selects the target CPU core, the target CPU core can initialize the second session. Specifically, the target CPU core may allocate storage space for the second session, and schedule the local memory of the centralized session synchronization device to store the second session. For example, the target CPU core may schedule the local memory of the centralized session synchronization device to store the data of the second session. Quintuple information.

For the case where the second session is the target session in step S204c, after the main CPU core of the centralized session synchronization device selects the target CPU core, the target CPU core can schedule the local memory of the centralized session synchronization device to store the changed state of the target session .

In an implementation manner, after step S204f, the target CPU core of step S204e may update the timeout start time of the second session to the information synchronization completion time. Thus, the target CPU core can wait to perform the destruction process on the second session.

Further, the target CPU core of step S204e can detect whether the session timeout duration of the second session reaches the preset duration according to the updated timeout start time of the second session, if the session timeout duration of the second session reaches the preset duration. , destroys the second session.

Specifically, in order to save the available storage space of the centralized session synchronization device and improve the management capability of the centralized session synchronization device for the session synchronized to the local session of the centralized session synchronization device, the target CPU core can periodically detect the session of the second session Timeout duration, the timeout duration of the second session is the duration from the timeout start time of the second session to the current time. If the session timeout duration of the second session reaches the preset duration, it is considered that the TCP connection corresponding to the second session has been disconnected, and the target CPU core can destroy the second session.

It should be noted that there is no strict execution time sequence between step S204 and steps S201-S203. For a load balancing device in the cloud computing network, as long as the session corresponding to the received target data packet is not found in the session stored locally on the load balancing device, the target data packet can be sent to the switch. for the switch to send to the centralized session synchronization facility. As long as the load balancing device needs to synchronize information to the centralized session synchronization device, it can send a control packet for information synchronization to the centralized session synchronization device through the switch. Specifically, with reference to the preferred embodiment given in step S204, as long as the load balancing device stores a session, and the session is a session that satisfies the preset synchronization conditions, it can send a message containing the session synchronization device to the centralized session synchronization device through the switch. Session control packets. Likewise, as long as the load balancing device detects that the state of the target session changes, it can send a control packet including the changed state of the target session to the centralized session synchronization device through the switch.

In the packet sending method provided by the embodiment of the present invention, after receiving the target data packet sent by the exchange, the load balancing device searches for the session corresponding to the target data packet locally on the load balancing device. The switch sends the target data packet to the centralized session synchronization device, and the centralized session synchronization device sends the target data packet to the application server group. It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device realizes the sending of the target data packet, so as to avoid all load balancing devices in the cloud computing network It is necessary to store the session information of all load balancing devices in the cluster and cause excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic. In the centralized session synchronization device, Sending the target data message and synchronizing the session corresponding to the target data message are all implemented on the same CPU core, thereby realizing lock-free processing and improving the centralized session synchronization management session and sending data messages. performance.

3 is a third schematic flowchart of a method for sending a message according to an embodiment of the present invention. The method is applied to a switch in a cloud computing network, and includes the following steps:

S301. Receive a target data message.

In a cloud computing network, when a client needs to send a target data packet to an application server group, it can first send the target data packet to a switch, and the switch receives the target data packet.

S302: Perform route allocation on the target data packet, determine a load balancing device for forwarding the target data packet, and send the target data packet to the determined load balancing device, so that the determined load balancing device is in the selected load balancing device. Find the session corresponding to the target data packet in the session stored locally on the determined load balancing device.

The switch allocates routes to the target data packets, that is, determines a load balancing device for the switch to forward the target data packets.

It can be understood that the determined load balancing device is a certain load balancing device among multiple load balancing devices in the cloud computing network.

In this embodiment, after receiving the target data packet, the switch can perform route allocation to the target data packet according to the preset ECMP-hash algorithm, that is, according to the preset ECMP-hash algorithm, multiple The load balancing device for forwarding the target data packet is determined in the load balancing device. Of course, this application only takes the above as an example for description, and the method for the switch to perform route allocation to the target data packet is not limited to this.

In this embodiment, the determined load balancing device in step S302 searches for the session corresponding to the target data packet in the locally stored session of the determined load balancing device, which may be exactly the same as step S102 in the embodiment shown in FIG. 1 . , and will not be repeated here.

S303: Receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device, so that the centralized session synchronization device can The stored session sends the target data packet to the application server farm.

Specifically, the load balancing device can encapsulate the target data packet, and send the encapsulated target data packet to the switch, and the switch sends the received encapsulated target data packet to the centralized session synchronization device.

For example, the load balancing device can encapsulate the target data packet in vxlan format. After the switch receives the target data packet encapsulated in vxlan format sent by the load balancing device, it does not decapsulate or parse the encapsulated target data packet, but directly encapsulates the target data packet in vxlan format. messages to a centralized session synchronization facility.

In this embodiment, the locally stored session of the centralized session synchronization device is: the session obtained from the synchronization of each load balancing device in the cloud computing network. It should be noted that session synchronization from each load balancing device of a cloud computing network to a centralized session synchronization device may be implemented by using the prior art.

As a preferred embodiment of the present invention, the centralized session synchronization device sends the target data packet to the application server group according to the session stored locally by the centralized session synchronization device, which may include steps S303a-S303c:

S303a, the main CPU core of the centralized session synchronization device determines the first session corresponding to the target data packet from the sessions stored locally by the centralized session synchronization device.

S303b, the main CPU core of the centralized session synchronization device performs hash calculation on the attribute of the first session according to a preset hash algorithm, and selects a target CPU core from the CPU cores of the centralized session synchronization device according to the calculation result.

S303c, the main CPU core of the centralized session synchronization device schedules the target CPU core of step S303b, so that the target CPU core of step S303b sends the target data packet to the application server group according to the first session.

In this preferred embodiment, the above steps S303a-S303c may be completely the same as the steps S103a-S103c, respectively, and will not be repeated here.

Based on the above preferred embodiment, in an implementation manner, after step S303c, the target CPU core in step S303b may update the timeout start time of the first session to the completion time of sending the target data message.

Further, the target CPU core of step S303b may detect whether the session timeout duration of the first session reaches the preset duration according to the updated timeout start time of the first session, and if the session timeout duration of the first session reaches the preset duration , destroys the first session.

Specifically, in order to save the available storage space of the centralized session synchronization device and improve the management capability of the centralized session synchronization device for the session synchronized to the local session of the centralized session synchronization device, the target CPU core can periodically detect the session of the first session The timeout duration, the timeout duration of the first session is the duration from the timeout start time of the first session to the current moment. If the session timeout duration of the first session reaches the preset duration, it is considered that the TCP connection corresponding to the first session has been disconnected, and the target CPU core can destroy the first session.

In the message sending method provided by the embodiment of the present invention, the switch sends the received target data message to the load balancing device determined after routing allocation, and the load balancing device does not search for the target data locally in the load balancing device After the session corresponding to the message, the target data message sent by the load balancing device is received and sent to the centralized session synchronization device, which sends the target data message to the application server group. It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device can realize the sending of the target data packet, thereby avoiding the load balancing in the cloud computing network. The device needs to store the session information of all load balancing devices in the cluster resulting in excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

4a is a fourth schematic flowchart of a method for sending a message according to an embodiment of the present invention. The method is applied to a switch in a cloud computing network, and includes the following steps:

S401. Receive a target data message.

S402: Perform route allocation on the target data packet, determine a load balancing device for forwarding the target data packet, and send the target data packet to the determined load balancing device, so that the determined load balancing device is in the specified load balancing device. Find the session corresponding to the target data packet in the session stored locally on the determined load balancing device.

S403: Receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device, so that the centralized session synchronization device can The stored session sends the target data packet to the application server farm.

In this embodiment, the above steps S401-S403 may be completely the same as the steps S301-S303 in the embodiment shown in FIG. 3, respectively, and will not be repeated here.

S404: Receive the control packet sent by the load balancing device, and send the control packet to the centralized session synchronization device, so that the centralized session synchronization device performs information synchronization according to the control packet.

In this embodiment, the control message is a message used for information synchronization. Specifically, the control message may be a message that includes a session and enables the centralized session synchronization device to synchronize information according to the session. The control message may also be a message that includes a state of a session and enables the centralized session synchronization device to synchronize information according to the state.

As a preferred embodiment of the present invention, receiving the control packet sent by the load balancing device and sending the control packet to the centralized session synchronization device may include the following step S404a:

S404a, after the load balancing device determines the to-be-synchronized session that satisfies the preset synchronization condition locally, the control packet including the to-be-synchronized session sent by the load balancing device is received, and the control packet including the to-be-synchronized session is sent to the centralized Session sync device.

As described in step S402, a session can be established between the client and the application server, and the load balancing device can locally store the established session in the load balancing device. For example, the load balancing device may locally store the quintuple information of the session established above. It can be understood that, according to the needs of the client, multiple sessions may be established between the client and the application server group at different times, and each load balancing device may also store multiple established sessions.

It can be understood by those skilled in the art that, among the sessions stored locally by the load balancing device, a session with a shorter duration and a smaller number of forwarded data packets may be classified as a short connection session. The duration of the session refers to the duration from the moment when the session is established to the current moment, and the number of data packets forwarded by the session refers to the number of data packets forwarded by the session during the duration of the session. The number of data packets sent by the group. In actual use, in order to reduce the pressure on the centralized session synchronization device to process the sessions synchronized by each load balancer in the cloud computing network to the local session of the centralized session synchronization device, each load balancer does not need to store the local short connection session of the load balancer. Sync to a centralized session sync facility. Therefore, a synchronization condition can be preset, and each load balancing device determines a session that satisfies the preset synchronization condition from the sessions stored locally by the load balancing device, and the session that meets the preset synchronization condition is that each load balancing device needs to synchronize Sessions to a centralized session synchronization device.

In an implementation manner, the preset synchronization conditions may include a first preset sub-synchronization condition and a second preset sub-synchronization condition. in,

The first preset sub-synchronization condition may be: the duration of the session is greater than or equal to the preset value of the session duration.

The second preset sub-synchronization condition may be: the number of data packets forwarded through the session exceeds or equals to a preset value of the number of data packets forwarded.

The above-mentioned preset value of the session duration and the preset value of the forwarding number of data packets can be set according to actual needs, and can also be set according to experience, which is not limited in the present invention.

Of course, this application only takes the above as an example for description, and the preset synchronization conditions are not limited to this.

The load balancing device may send a control packet containing the session to be synchronized to the switch, and the switch receives the control packet containing the session to be synchronized sent by the load balancing device. It should be noted that a control packet contains only one session to be synchronized.

Specifically, the load balancing device may encapsulate the control packet containing the session to be synchronized, and send the encapsulated control packet containing the session to be synchronized to the switch, and the switch will receive the encapsulated control packet containing the session to be synchronized. The message is sent to the centralized session synchronization device.

For example, the load balancing device may encapsulate the control packet containing the session to be synchronized into the vxlan format. After the switch receives the control packet containing the session to be synchronized and encapsulated in vxlan format sent by the load balancing device, it does not decapsulate or parse the encapsulated control packet containing the session to be synchronized, but directly converts the encapsulated control packet containing the session to be synchronized. The control packet containing the session to be synchronized encapsulated in vxlan format is sent to the centralized session synchronization device.

As another preferred embodiment of the present invention, receiving the control packet sent by the load balancing device and sending the control packet to the centralized session synchronization device may include the following step S404b:

S404b, receiving a control packet including the state of the target session sent by the load balancing device after detecting that the state of the target session has changed, and sending the control packet including the state of the target session to the centralized session synchronization device, wherein, The target session is: a local session that has been synced to the centralized session sync device.

In this embodiment, the status of the session in the TCP connection is shown in Table 1.

After the load balancing device detects that the state of the target session has changed, it can send a control packet containing the changed state of the target session to the switch, and the switch will send the received control packet containing the changed state of the target session to the centralized Session sync device. It should be noted that a control packet contains only one changed state of the target session.

Specifically, the load balancing device may encapsulate the control packet containing the changed state of the target session, and send the encapsulated control packet containing the changed state of the target session to the switch, and the switch will receive the encapsulated control packet. A control message containing the changed state of the target session is sent to the centralized session synchronization facility.

For example, the load balancing device may encapsulate a control packet containing the changed state of the target session into vxlan format. After the switch receives the control packet that contains the changed state of the target session and is encapsulated in vxlan format and sent by the load balancing device, it does not decapsulate or parse the encapsulated control packet that contains the changed state of the target session. , but directly send the control message encapsulated in vxlan format containing the changed state of the target session to the centralized session synchronization device.

It should be noted that there is no strict execution time sequence between step S404b and step S404a. For a switch in a cloud computing network, as long as it receives a control packet containing the to-be-synchronized session sent by the load balancing device after determining the to-be-synchronized session that the load balancing device locally satisfies the preset synchronization conditions, it can Control packets are sent to a centralized session synchronization device. As long as a control packet containing the changed state of the target session sent by the load balancing device after detecting that the state of the target session has changed is received, the control packet can be sent to the centralized session synchronization device.

Correspondingly, in an implementation manner, the centralized session synchronization device performs information synchronization according to the control message, which may include steps S404c-S404e:

S404c, the main CPU core of the centralized session synchronization device determines the second session corresponding to the control packet.

Specifically, if the centralized session synchronization device receives the encapsulated control packet sent by the switch, first, the main CPU core can decapsulate the encapsulated control packet; then,

For the case where the control message is the control message in step S404a, the main CPU core can read the quintuple information of the session included in the control message, so as to determine the session included in the control message as the corresponding session of the control message. second session;

In the case where the control message is the control message in step S404b, the main CPU core may read the quintuple information of the target session, so as to determine the target session as the second session corresponding to the control message.

S404d, the main CPU core of the centralized session synchronization device performs hash calculation on the attribute of the second session according to a preset hash algorithm, and selects a target CPU core from the CPU cores of the centralized session synchronization device according to the calculation result.

After the main CPU core of the centralized session synchronization device determines the second session corresponding to the control message, the main CPU core can perform hash calculation on the attributes of the second session according to the symmetric hash algorithm to obtain the hash feature of the second session. value; according to the hash feature value of the second session, according to a preset selection rule, select the target CPU core corresponding to the second session from other CPU cores except the main CPU core in the local centralized session synchronization device.

It should be noted that the target CPU core is a certain CPU core among other CPU cores other than the main CPU core in the local centralized session synchronization device. The second dialogue corresponds to only one target CPU core.

S404e, the main CPU core of the centralized session synchronization device schedules the target CPU core of step S404d to synchronize information according to the second session.

For the case where the second session is included in the control message in step S404a, after the main CPU core of the centralized session synchronization device selects the target CPU core, the target CPU core can initialize the second session. Specifically, the target CPU core may allocate storage space for the second session, and schedule the local memory of the centralized session synchronization device to store the second session. For example, the target CPU core may schedule the local memory of the centralized session synchronization device to store the data of the second session. Quintuple information.

For the case where the second session is the target session in step S404b, after the main CPU core of the centralized session synchronization device selects the target CPU core, the target CPU core can schedule the local memory of the centralized session synchronization device to store the changed state of the target session .

In an implementation manner, after step S404e, the target CPU core of step S404d may update the timeout start time of the second session to the information synchronization completion time. Thus, the target CPU core can wait to perform the destruction process on the second session.

Further, the target CPU core of step S404d can detect whether the session timeout duration of the second session reaches the preset duration according to the updated timeout start time of the second session, if the session timeout duration of the second session reaches the preset duration. , destroys the second session.

Specifically, in order to save the available storage space of the centralized session synchronization device and improve the management capability of the centralized session synchronization device for the session synchronized to the local session of the centralized session synchronization device, the target CPU core can periodically detect the session of the second session Timeout duration, the timeout duration of the second session is the duration from the timeout start time of the second session to the current time. If the session timeout duration of the second session reaches the preset duration, it is considered that the TCP connection corresponding to the second session has been disconnected, and the target CPU core can destroy the second session.

It should be noted that there is no strict execution time sequence between step S404 and steps S401-S403. For a switch in the cloud computing network, as long as it receives the target data packet sent by the load balancing device after failing to find a session, it can send the target data packet to the centralized session synchronization device. As long as the control packet for information synchronization sent by the load balancing device when it needs to synchronize information to the centralized session synchronization device is received, the control packet can be sent to the centralized session synchronization device. Specifically, with reference to the preferred embodiment given in step S404, as long as the load balancing device receives the to-be-synchronized session that satisfies the preset synchronization conditions locally, the control report containing the to-be-synchronized session sent by the load balancing device is received. message, the control message can be sent to the centralized session synchronization device. As long as a control packet containing the changed state of the target session sent by the load balancing device after detecting that the state of the target session has changed is received, the control packet can be sent to the centralized session synchronization device.

In the message sending method provided by the embodiment of the present invention, the switch sends the received target data message to the load balancing device determined after routing allocation, and the load balancing device does not search for the target data locally in the load balancing device After the session corresponding to the message, the target data message sent by the load balancing device is received and sent to the centralized session synchronization device, which sends the target data message to the application server group. It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device can realize the sending of the target data packet, thereby avoiding the load balancing in the cloud computing network. The device needs to store the session information of all load balancing devices in the cluster resulting in excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

4b is a fifth schematic flowchart of a message sending method provided by an embodiment of the present invention. The method is applied to a centralized session synchronization device in a cloud computing network, and includes the following steps:

S511: Receive the target data packet sent by the switch.

In a cloud computing network, when a client needs to send a target data packet to an application server group, it first sends the target data packet to the switch, and the switch assigns the route to the target data packet, that is, the switch determines the destination for forwarding. The load balancing device for the data packet, and then the switch sends the target data packet to the determined load balancing device. The load balancing device that has received the target data packet searches for the session corresponding to the target data packet in its locally stored sessions, and if not, sends the target data packet to the switch, and the switch sends the target data packet to the centralized session synchronization device.

It can be understood that the determined load balancing device is a certain load balancing device among multiple load balancing devices in the cloud computing network.

S512: Send the target data packet to the application server group according to the session stored locally in the centralized session synchronization device.

In this embodiment, the locally stored session of the centralized session synchronization device is: the session obtained from the synchronization of each load balancing device in the cloud computing network. It should be noted that session synchronization from each load balancing device of a cloud computing network to a centralized session synchronization device may be implemented by using the prior art.

As a preferred embodiment of the present invention, the centralized session synchronization device sends the target data packet to the application server group according to the locally stored session of the centralized session synchronization device, which may include steps S512a-S512c:

S512a, the main CPU core of the centralized session synchronization device determines the first session corresponding to the target data packet from the locally stored sessions of the centralized session synchronization device.

S512b, the main CPU core of the centralized session synchronization device performs hash calculation on the attribute of the first session according to a preset hash algorithm, and selects a target CPU core from the CPU cores of the centralized session synchronization device according to the calculation result.

S512c, the main CPU core of the centralized session synchronization device schedules the target CPU core of step S512b, so that the target CPU core of step S512b sends the target data message to the application server group according to the first session.

In this preferred embodiment, the above steps S512a-S512c may be completely the same as the steps S103a-S103c in the embodiment shown in FIG. 1, respectively, and will not be repeated here.

In this preferred embodiment, the main CPU core of the centralized session synchronization device first determines the first session corresponding to the target data packet, and then selects the target CPU core corresponding to the first session, and the first session corresponds to a unique target CPU nuclear. In this way, as long as the session corresponding to a data packet is the first session, the target CPU core corresponding to the first session sends the data packet to the application server group, that is, the corresponding session belongs to the same session. Different data packets are sent to the application server group by the same CPU core, which realizes the lock-free processing of data packets, and improves the session management capability of the centralized session synchronization device and the transmission efficiency of the number of packets.

Based on the above preferred embodiment, in an implementation manner, after step S512c, the target CPU core in step S512b may update the timeout start time of the first session to the completion time of sending the target data message.

Further, the target CPU core of step S512b can detect whether the session timeout duration of the first session reaches the preset duration according to the updated timeout start time of the first session, if the session timeout duration of the first session reaches the preset duration. , destroys the first session.

Specifically, in order to save the available storage space of the centralized session synchronization device and improve the management capability of the centralized session synchronization device for the session synchronized to the local session of the centralized session synchronization device, the target CPU core can periodically detect the session of the first session The timeout duration, the timeout duration of the first session is the duration from the timeout start time of the first session to the current moment. If the session timeout duration of the first session reaches the preset duration, it is considered that the TCP connection corresponding to the first session has been disconnected, and the target CPU core can destroy the first session.

In the message sending method provided by the embodiment of the present invention, after receiving the target data message sent by the exchange, the centralized session synchronization device sends the target data message to the application server group according to the session stored locally by the centralized session synchronization device . It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device realizes the sending of the target data packet, so as to avoid all load balancing devices in the cloud computing network It is necessary to store the session information of all load balancing devices in the cluster and cause excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

4c is a sixth schematic flowchart of a message sending method provided by an embodiment of the present invention. The method is applied to a centralized session synchronization device in a cloud computing network, and includes the following steps:

S611: Receive a target data packet sent by the switch.

S612: Send the target data packet to the application server group according to the locally stored session of the centralized session synchronization device.

In this embodiment, the above-mentioned steps S611-S612 may be exactly the same as the steps S511-S512 in the embodiment shown in FIG. 4b, respectively, and will not be repeated here.

S613: Receive a control message sent by the switch; perform information synchronization according to the control message.

In this embodiment, the load balancing device may send a control packet to the switch, and the switch may send the received control packet to the centralized session synchronization device. The control message is a message used for information synchronization. Specifically, the control message may be a message that includes a session and enables the centralized session synchronization device to synchronize information according to the session. The control message may also be a message that includes a state of a session and enables the centralized session synchronization device to synchronize information according to the state.

As a preferred embodiment of the present invention, the control packet may be: after the load balancing device determines the session to be synchronized locally that satisfies the preset synchronization condition, the control packet containing the session to be synchronized sent to the switch (may be It is the same as the control message of step S204b in the embodiment shown in FIG. 2). In an implementation manner, the preset synchronization condition may be the same as the preset synchronization condition in the embodiment shown in FIG. 2 . It should be noted that a control packet contains only one session to be synchronized.

As another preferred embodiment of the present invention, the control message may be: after the load balancing device detects that the state of the target session has changed, a control message containing the state of the target session is sent to the switch (which may be the same as that described in FIG. 2 ). The control message in step S204c of the embodiment is the same). The target session is: the centralized session synchronization device has synchronized from each load balancing device in the cloud computing network to the local session of the centralized session synchronization device.

As a preferred embodiment of the present invention, the centralized session synchronization device performs information synchronization according to the control message, which may include steps S613a-S613c:

S613a, the main CPU core of the centralized session synchronization device determines the second session corresponding to the control packet.

S613b, the main CPU core of the centralized session synchronization device performs a hash calculation on the attribute of the second session according to a preset hash algorithm, and selects a target CPU core from the CPU cores of the centralized session synchronization device according to the calculation result.

S613c, the main CPU core of the centralized session synchronization device schedules the target CPU core of step S613b to synchronize information according to the second session.

In this preferred embodiment, the above steps S613a-S613c may be completely the same as the steps S204d-S204f in the embodiment shown in FIG. 2, respectively, and will not be repeated here.

In an implementation manner, after step S613c, the target CPU core of step S613b may update the timeout start time of the second session to the information synchronization completion time. Thus, the target CPU core can wait to perform the destruction process on the second session.

Further, the target CPU core of step S613b can detect whether the session timeout duration of the second session reaches the preset duration according to the updated timeout start time of the second session, if the session timeout duration of the second session reaches the preset duration. , destroys the second session.

Specifically, in order to save the available storage space of the centralized session synchronization device and improve the management capability of the centralized session synchronization device for the session synchronized to the local session of the centralized session synchronization device, the target CPU core can periodically detect the session of the second session Timeout duration, the timeout duration of the second session is the duration from the timeout start time of the second session to the current time. If the session timeout duration of the second session reaches the preset duration, it is considered that the TCP connection corresponding to the second session has been disconnected, and the target CPU core can destroy the second session.

It should be noted that there is no strict execution time sequence between step S613 and steps S611-S612. For the centralized session synchronization device in the cloud computing network, as long as the target data packet sent by the switch is received, the target data packet can be sent to the application server group. As long as a control packet for information synchronization sent by the switch is received, information synchronization can be performed according to the control packet.

In the message sending method provided by the embodiment of the present invention, after receiving the target data message sent by the exchange, the centralized session synchronization device sends the target data message to the application server group according to the session stored locally by the centralized session synchronization device . It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device realizes the sending of the target data packet, so as to avoid all load balancing devices in the cloud computing network It is necessary to store the session information of all load balancing devices in the cluster and cause excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

5 is a schematic diagram of a first structure of a message sending apparatus provided by an embodiment of the present invention. The apparatus is applied to a load balancing device in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. The above apparatus includes: a first receiving module 501 , a first searching module 502 , and a first sending module 503 .

The first receiving module 501 is configured to receive the target data packet sent by the switch.

The first search module 502 is configured to search for the session corresponding to the target data packet in the locally stored session of the load balancing device that has received the target data packet.

The first sending module 503 is configured to send the target data packet to the switch when the session corresponding to the target data packet fails to be searched locally, so that the switch sends the target data packet to the centralized session synchronization device, so that the centralized The session synchronization device sends the target data message to the application server group according to the locally stored session of the centralized session synchronization device, wherein the session stored locally by the centralized session synchronization device is: synchronized from each load balancing device in the cloud computing network acquired session.

In the message sending device provided by the embodiment of the present invention, after receiving the target data message sent by the exchange, the load balancing device locally searches the load balancing device for the session corresponding to the target data message, and if not found, sends the target data message The switch sends the target data packet to the centralized session synchronization device, and the centralized session synchronization device sends the target data packet to the application server group. It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device realizes the sending of the target data packet, so as to avoid all load balancing devices in the cloud computing network It is necessary to store the session information of all load balancing devices in the cluster and cause excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

6 is a schematic diagram of a second structure of a message sending apparatus provided by an embodiment of the present invention. The apparatus is applied to a load balancing device in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. The above apparatus includes: a fourth receiving module 601 , a second searching module 602 , a second sending module 603 and a third sending module 604 .

In this embodiment, the fourth receiving module 601, the second searching module 602, and the second sending module 603 may be the same as the first receiving module 501, the first searching module 502, and the first sending module 503 in the embodiment shown in FIG. 5, respectively. The same, and will not be repeated here.

The third sending module 604 is configured to send a control packet to the centralized session synchronization device through the switch, so that the centralized session synchronization device performs information synchronization according to the control packet, wherein the control packet is a packet used for information synchronization .

In an implementation manner, the third sending module 604 may include: a first sending sub-module 6041 .

The first sending sub-module 6041 is configured to determine a session that meets a preset synchronization condition among the sessions stored locally by the load balancing device as a to-be-synchronized session; send a control packet including the to-be-synchronized session to the centralized session synchronization device through the switch.

In an implementation manner, the preset synchronization conditions may include a first preset sub-synchronization condition and a second preset sub-synchronization condition. in,

The first preset sub-synchronization condition may be: the duration of the session is greater than or equal to the preset value of the session duration.

The second preset sub-synchronization condition may be: the number of data packets forwarded through the session exceeds or equals to a preset value of the number of data packets forwarded.

In an implementation manner, the third sending module 604 may include: a second sending sub-module 6042 .

The second sending sub-module 6042 is used to detect whether the state of the target session has changed, wherein the target session is: a local session that has been synchronized to the centralized session synchronization device; The session synchronization device sends a control packet containing the state of the target session.

In the message sending device provided by the embodiment of the present invention, after receiving the target data message sent by the exchange, the load balancing device locally searches the load balancing device for the session corresponding to the target data message, and if not found, sends the target data message The switch sends the target data packet to the centralized session synchronization device, and the centralized session synchronization device sends the target data packet to the application server group. It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device realizes the sending of the target data packet, so as to avoid all load balancing devices in the cloud computing network It is necessary to store the session information of all load balancing devices in the cluster and cause excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

FIG. 7 is a third schematic structural diagram of a message sending apparatus provided by an embodiment of the present invention. The apparatus is applied to a switch in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. The above device It includes: a second receiving module 701 , a first allocating module 702 , and a third receiving module 703 .

The second receiving module 701 is configured to receive the target data message.

The first distribution module 702 is configured to perform route distribution on the target data packet, determine a load balancing device for forwarding the target data packet, and send the target data packet to the determined load balancing device, so that the determined load balancing device The load balancing device searches for a session corresponding to the target data packet in the determined session stored locally on the load balancing device.

The third receiving module 703 is configured to receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device, so that the centralized session synchronization device can The locally stored session of the centralized session synchronization device sends the target data message to the application server group, wherein the locally stored session of the centralized session synchronization device is the session obtained from each load balancing device in the cloud computing network.

In the message sending device provided by the embodiment of the present invention, the switch sends the received target data message to the load balancing device determined after routing allocation, and the load balancing device does not search for the target data locally in the load balancing device After the session corresponding to the message, the target data message sent by the load balancing device is received and sent to the centralized session synchronization device, which sends the target data message to the application server group. It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device can realize the sending of the target data packet, thereby avoiding the load balancing in the cloud computing network. The device needs to store the session information of all load balancing devices in the cluster resulting in excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

8a is a schematic diagram of a fourth structure of a message sending apparatus provided by an embodiment of the present invention. The apparatus is applied to a switch in a cloud computing network. The cloud computing network includes a switch, a load balancing device, and a centralized session synchronization device. The above device It includes: a fifth receiving module 801 , a second allocating module 802 , a sixth receiving module 803 and a seventh receiving module 804 .

In this embodiment, the fifth receiving module 801, the second allocating module 802, and the sixth receiving module 803 may be the same as the second receiving module 701, the first allocating module 702, and the third receiving module 703 in the embodiment described in FIG. 7, respectively. The same, and will not be repeated here.

The seventh receiving module 804 is configured to receive the control message sent by the load balancing device, and send the control message to the centralized session synchronization device, so that the centralized session synchronization device performs information synchronization according to the control message, wherein the control message The message is a message used for information synchronization.

In an implementation manner, the seventh receiving module 804 may include: a first receiving sub-module 8041 .

The first receiving sub-module 8041 is configured to receive the control packet containing the session to be synchronized sent by the load balancing device after determining the session to be synchronized that satisfies the preset synchronization condition locally, and send the control packet containing the session to be synchronized Sent to a centralized session synchronization facility.

In an implementation manner, the preset synchronization conditions may be exactly the same as the preset synchronization conditions in the embodiment shown in FIG. 6 , which will not be repeated here.

In an implementation manner, the seventh receiving module 804 may include: a second receiving sub-module 8042 .

The second receiving sub-module 8042 is configured to receive a control packet including the state of the target session sent by the load balancing device after detecting that the state of the target session has changed, and send the control packet including the state of the target session to the centralized A centralized session synchronization device, wherein the target session is: a local session that has been synchronized to the centralized session synchronization device.

In the message sending device provided by the embodiment of the present invention, the switch sends the received target data message to the load balancing device determined after routing allocation, and the load balancing device does not search for the target data locally in the load balancing device After the session corresponding to the message, the target data message sent by the load balancing device is received and sent to the centralized session synchronization device, which sends the target data message to the application server group. It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device can realize the sending of the target data packet, thereby avoiding the load balancing in the cloud computing network. The device needs to store the session information of all load balancing devices in the cluster resulting in excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

FIG. 8b is a schematic diagram of a fifth structure of a message sending apparatus provided by an embodiment of the present invention. The apparatus is applied to a centralized session synchronization device in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. equipment, the above device includes: an eighth receiving module 711 and a fourth sending module 712 .

The eighth receiving module 711 is configured to receive the target data packet sent by the switch; wherein, the target data packet is a load balancing device that has received the target data packet and does not find the corresponding target data packet in its locally stored session After the session, send to the switch;

The fourth sending module 712 is configured to send the target data packet to the application server group according to the session stored locally in the centralized session synchronization device.

In an implementation manner, the fourth sending module 712 may include: a fourth sending sub-module 7121 .

The fourth sending submodule 7121 is used to schedule the main CPU core of the centralized session synchronization device, and determine the first session corresponding to the target data packet from the sessions stored locally by the centralized session synchronization device; and is also used to schedule the centralized session The main CPU core of the synchronization device performs a hash calculation on the attributes of the first session according to a preset hash algorithm, and selects a target CPU core from the CPU cores of the centralized session synchronization device according to the calculation result; it is also used for scheduling the centralized session synchronization device. The main CPU core of the session synchronization device further schedules the target CPU core, so that the target CPU core sends the target data packet to the application server group according to the first session.

In an implementation manner, the above apparatus may further include: a first clock module 713 configured to schedule the target CPU core to update the timeout start time of the first session to the completion time of sending the target data packet.

In an implementation manner, the first clock module 713 is further configured to schedule the target CPU core to detect whether the session timeout duration of the first session has reached a preset duration according to the updated timeout start time of the first session. If the session timeout period reaches the preset period, the first session will be destroyed.

In the message sending device provided by the embodiment of the present invention, after receiving the target data message sent by the exchange, the centralized session synchronization device sends the target data message to the application server group according to the session stored locally by the centralized session synchronization device . It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device realizes the sending of the target data packet, so as to avoid all load balancing devices in the cloud computing network It is necessary to store the session information of all load balancing devices in the cluster and cause excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

8c is a schematic diagram of a sixth structure of a message sending apparatus provided by an embodiment of the present invention. The apparatus is applied to a centralized session synchronization device in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. equipment, the above device includes: a ninth receiving module 811 , a fifth sending module 812 and a first synchronization module 813 .

The ninth receiving module 811 is configured to receive the target data packet sent by the switch; wherein, the target data packet is a load balancing device that has received the target data packet and does not find the corresponding target data packet in its locally stored session After the session, send to the switch;

The fifth sending module 812 is configured to send the target data packet to the application server group according to the session stored locally in the centralized session synchronization device.

In an implementation manner, the fifth sending module 812 may include: a fifth sending sub-module 8121 .

The fifth sending sub-module 8121 is used to schedule the main CPU core of the centralized session synchronization device, and determine the first session corresponding to the target data packet from the sessions stored locally by the centralized session synchronization device; it is also used to schedule the centralized session The main CPU core of the synchronization device performs a hash calculation on the attributes of the first session according to a preset hash algorithm, and selects a target CPU core from the CPU cores of the centralized session synchronization device according to the calculation result; it is also used for scheduling the centralized session synchronization device. The main CPU core of the session synchronization device further schedules the target CPU core in this implementation, so that the target CPU core in this implementation sends the target data packet to the application server group according to the first session.

In an implementation manner, the above-mentioned apparatus may further include: a second clock module 814 for scheduling the target CPU core selected by the fifth sending sub-module 8121 to update the timeout start time of the first session to the sending of the target data message. Completion time.

In an implementation manner, the second clock module 814 is further configured to schedule the target CPU core selected by the fifth sending sub-module 8121 to detect whether the session timeout duration of the first session is based on the updated timeout start time of the first session. When the preset duration is reached, if the session timeout duration of the first session reaches the preset duration, the first session is destroyed.

The first synchronization module 813 is configured to receive a control message sent by the switch, and perform information synchronization according to the control message.

In an implementation manner, the first synchronization module 813 may include: a first synchronization sub-module 8131 .

The first synchronization sub-module 8131 is used to schedule the main CPU core of the centralized session synchronization device to determine the second session corresponding to the control message; it is also used to schedule the main CPU core of the centralized session synchronization device according to the preset hash algorithm, Hash calculation is performed on the attributes of the second session, and according to the calculation result, the target CPU core is selected from the CPU cores of the centralized session synchronization device; it is also used to schedule the main CPU core of the centralized session synchronization device, and further schedules in this implementation method. The target CPU core performs information synchronization according to the second session.

In an implementation manner, the above apparatus may further include: a third clock module 815 configured to schedule the target CPU core selected by the first synchronization sub-module 8131 to update the timeout start time of the second session to the information synchronization completion time.

In an implementation manner, the third clock module 815 is further configured to schedule the target CPU core selected by the first synchronization sub-module 8131 to detect whether the session timeout duration of the second session is based on the updated timeout start time of the second session. When the preset duration is reached, if the session timeout duration of the second session reaches the preset duration, the second session is destroyed.

In the message sending device provided by the embodiment of the present invention, after receiving the target data message sent by the exchange, the centralized session synchronization device sends the target data message to the application server group according to the session stored locally by the centralized session synchronization device . It can be seen that in the solution provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device realizes the sending of the target data packet, so as to avoid all load balancing devices in the cloud computing network It is necessary to store the session information of all load balancing devices in the cluster and cause excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

An embodiment of the present invention further provides a system for sending a message. As shown in FIG. 9a , the system includes: a switch 901 , a load balancing device, and a centralized session synchronization device 902 . in,

The switch 901 is configured to receive the target data packet; perform route allocation on the target data packet, determine a load balancing device for forwarding the target data packet; and send the target data packet to the determined load balancing device.

The load balancing device is configured to receive the target data packet sent by the switch 901 ; search for the session corresponding to the target data packet in the session stored locally on the load balancing device; if the search fails, send the target data packet to the switch 901 .

The switch 901 is further configured to receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device 902 .

The centralized session synchronization device 902 is configured to receive the target data packet sent by the switch 901, and send the target data packet to the application server group according to the session stored locally by the centralized session synchronization device 902, wherein the centralized session synchronization device The locally stored session in 902 is: a session obtained synchronously from each load balancing device in the above-mentioned system.

FIG. 9b shows a schematic flowchart of the above-mentioned message sending system sending the target data message to the application server group.

In an implementation manner, the load balancing device is further configured to send a control packet to the switch 901;

The switch 901 is further configured to receive a control packet sent by the load balancing device, and send the control packet to the centralized session synchronization device 902;

The centralized session synchronization device 902 is further configured to receive a control packet sent by the switch 901, and perform information synchronization according to the control packet, where the control packet is a packet used for information synchronization.

In an implementation manner, the load balancing device is specifically configured to determine that a session that satisfies a preset synchronization condition among the sessions stored locally by the load balancing device is a session to be synchronized, and sends a control packet including the session to be synchronized to the switch 901;

Specifically, the preset synchronization conditions include a first preset sub-synchronization condition and a second preset sub-synchronization condition;

The first preset sub-synchronization condition is: the session duration is greater than or equal to the session duration preset value;

The second preset sub-synchronization condition is: the number of data packets forwarded through the session exceeds or equals to the preset value of the number of data packets forwarded;

The switch 901 is specifically configured to receive a control packet containing the session to be synchronized sent by the load balancing device, and send the control packet containing the session to be synchronized to the centralized session synchronization device 902;

The centralized session synchronization device 902 is specifically configured to receive a control packet sent by the switch 901 and including the session to be synchronized.

In an implementation manner, the load balancing device is specifically used to detect whether the state of the target session changes, wherein the target session is: a local session that has been synchronized to the centralized session synchronization device 902; if the state of the detected target session changes, sending a control message containing the state of the target session to the switch 901;

The switch 901 is specifically configured to receive a control message including the state of the target session sent by the load balancing device, and send the control message including the state of the target session to the centralized session synchronization device 902;

The centralized session synchronization device 902 is specifically configured to receive a control packet including the state of the target session sent by the switch 901 .

FIG. 9c shows a schematic flowchart of the flow of the load balancing device sending a control message to the centralized session synchronization device through the switch in the above-mentioned message sending system.

In an implementation manner, the centralized session synchronization device 902 is specifically configured to schedule the local main CPU core of the centralized session synchronization device 902, and from the locally stored sessions of the centralized session synchronization device 902, determine the corresponding target data packet. The first session; according to a preset hash algorithm, hash calculation is performed on the attributes of the first session, and according to the calculation result, a target CPU core is selected from the local CPU cores of the centralized session synchronization device 902; the target CPU core is scheduled so that The target CPU core sends the target data packet to the application server group according to the first session.

In an implementation manner, the centralized session synchronization device 902 is further configured to schedule the target CPU core to update the timeout start time of the first session to the completion time of sending the target data packet.

In an implementation manner, the centralized session synchronization device 902 is further configured to schedule the target CPU core to detect whether the session timeout duration of the first session reaches a preset duration according to the updated timeout start time of the first session, if the When the session timeout duration of the first session reaches the preset duration, the first session is destroyed.

In an implementation manner, the centralized session synchronization device 902 is specifically configured to schedule the local main CPU core of the centralized session synchronization device 902 to determine the second session corresponding to the control packet; Hash calculation is performed on the attributes of , and according to the calculation result, the target CPU core is selected from the local CPU cores; the target CPU core is scheduled to perform information synchronization according to the second session.

In an implementation manner, the centralized session synchronization device 902 is further configured to schedule the target CPU core to update the timeout start time of the second session to the information synchronization completion time.

In an implementation manner, the centralized session synchronization device 902 is further configured to schedule the target CPU core to detect whether the session timeout duration of the second session has reached a preset duration according to the updated timeout start time of the second session, if the The session timeout duration of the second session reaches the preset duration, and the second session is destroyed.

As a preferred embodiment of the present invention, the centralized session synchronization device 902 may further include a control module 9021 (not shown in FIG. 9 ) for acquiring the number of sessions stored locally by the centralized session synchronization device 902, each session The number of forwarded data packets for easy presentation; the control module is also used to obtain the utilization rate of the CPU cores of the centralized session synchronization device 902 for easy maintenance; the control module is also used for the centralized session synchronization The application in the synchronization device 902 provides an Application Programming Interface (API).

In the message sending system provided by the embodiment of the present invention, after receiving the target data message sent by the exchange, the load balancing device locally searches the load balancing device for the session corresponding to the target data message. The switch sends the target data packet to the centralized session synchronization device, and the centralized session synchronization device sends the target data packet to the application server group. It can be seen that, in the system provided by the embodiment of the present invention, when the session corresponding to the target data packet does not exist locally on the load balancing device, the centralized session synchronization device realizes the sending of the target data packet, so as to avoid all load balancing devices in the cloud computing network It is necessary to store the session information of all load balancing devices in the cluster and cause excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. The electronic device is a load balancing device in a cloud computing network. The cloud computing network includes a switch, a load balancing device, and a centralized session synchronization device. The load balancing device Including: processor 1001 and memory 1003;

a memory 1003 for storing computer programs;

The processor 1001 is configured to implement the method steps for sending packets applied to the load balancing device in the cloud computing network when executing the program stored in the memory 1003 .

Specifically, the above message sending method includes:

Receive the target data message sent by the switch;

In the session stored locally on the load balancing device that has received the target data packet, search for the session corresponding to the target data packet; if the search fails, send the target data packet to the switch, so that the switch sends the target data packet to The centralized session synchronization device, so that the centralized session synchronization device sends the target data packet to the application server group according to the locally stored session of the centralized session synchronization device, wherein the locally stored session of the centralized session synchronization device is: Sessions obtained from the synchronization of various load balancing devices in the cloud computing network.

It should be noted that other implementations of the packet sending method implemented by the processor executing the program stored in the memory are the same as the implementation of the packet sending method applied to the load balancing device mentioned in the foregoing method embodiment section. The method is the same and will not be repeated here.

After receiving the target data message sent by the exchange, the electronic device provided by the embodiment of the present invention searches for the session corresponding to the target data message locally on the electronic device, and if not found, sends the target data message to the switch, and the switch sends the target data message The target data packet is sent to the centralized session synchronization device, and the centralized session synchronization device sends the target data packet to the application server group. It can be seen that the electronic device provided by the embodiment of the present invention can realize the sending of the target data packet by the centralized session synchronization device when the session corresponding to the target data packet does not exist locally on the electronic device, thereby avoiding the load balancing device in the cloud computing network. It is necessary to store the session information of all load balancing devices in the cluster and cause excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

11 is a schematic structural diagram of another electronic device provided by an embodiment of the present invention. The electronic device is a switch in a cloud computing network. The cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device. The switch includes: processing device 1101 and memory 1103;

a memory 1103 for storing computer programs;

The processor 1101 is configured to implement the method steps of the packet sending applied to the switch in the cloud computing network when executing the program stored in the memory 1103 .

Specifically, the above message sending method includes:

Receive the target data message;

Route allocation to the target data packet, determine the load balancing device for forwarding the target data packet, and send the target data packet to the determined load balancing device, so that the determined load balancing device is in the determined load balancing device. Find the session corresponding to the target data packet in the session stored locally on the load balancing device;

Receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device, so that the centralized session synchronization device The session is to send the target data message to the application server group, wherein the session stored locally by the centralized session synchronization device is: the session obtained from the synchronization of each load balancing device in the cloud computing network.

It should be noted that other implementations of the message sending method implemented by the processor executing the program stored in the memory are the same as the implementations of the message sending method applied to the switch mentioned in the foregoing method embodiment section. , which will not be repeated here.

The electronic device provided by the embodiment of the present invention sends the received target data packet to the load balancing device determined after routing allocation, and receives the target data packet after the load balancing device does not search for the session corresponding to the target data packet locally. The target data packet sent by the load balancing device is sent to the centralized session synchronization device, and the centralized session synchronization device sends the target data packet to the application server group. It can be seen that the electronic device provided by the embodiment of the present invention can realize the sending of the target data packet by the centralized session synchronization device when the session corresponding to the target data packet does not exist locally on the load balancing device, thereby avoiding the load balancing in the cloud computing network. The device needs to store the session information of all load balancing devices in the cluster resulting in excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

12 is a schematic structural diagram of another electronic device provided by an embodiment of the present invention, where the electronic device is a centralized session synchronization device in a cloud computing network, and the cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device, The centralized session synchronization device includes: a processor 1201 and a memory 1203;

The memory 1203 is used to store computer programs;

The processor 1201 is configured to implement the method steps of the packet sending applied to the switch in the cloud computing network when executing the program stored in the memory 1203 .

Specifically, the above message sending method includes:

Receive the target data packet sent by the switch; wherein, the target data packet is sent to the switch by the load balancing device that has received the target data packet after not finding the session corresponding to the target data packet in the session stored locally by itself target data message;

The target data packet is sent to the application server farm according to the locally stored session of the centralized session synchronization device.

It should be noted that other implementations of the message sending method implemented by the processor executing the program stored in the memory are the same as the message sending method applied to the centralized session synchronization device mentioned in the foregoing method embodiment section. The implementation method is the same, and will not be repeated here.

After receiving the target data message sent by the exchange, the electronic device provided by the embodiment of the present invention sends the target data message to the application server group according to the session stored locally in the electronic device. It can be seen that the electronic device provided by the embodiment of the present invention can realize the sending of the target data packet when the session corresponding to the target data packet does not exist locally on the load balancing device, and avoid that the load balancing device in the cloud computing network needs to be stored in the cluster. The session information of all load balancing devices causes excessive CPU resource usage, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

The memory may include random access memory (Random Access Memory, RAM for short), and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

The above-mentioned processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, referred to as CPU), a network processor (Network Processor, referred to as NP), etc.; may also be a digital signal processor (Digital Signal Processing, referred to as DSP) , Application Specific Integrated Circuit (ASIC for short), Field-Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.

An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is a storage medium of a load balancing device in a cloud computing network, where the cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device , a computer program is stored in the computer-readable storage medium, and is used to execute the method steps of the packet sending applied to the load balancing device in the cloud computing network.

Specifically, the above message sending method includes:

Receive the target data message sent by the switch;

In the session stored locally on the load balancing device that has received the target data packet, search for the session corresponding to the target data packet; if the search fails, send the target data packet to the switch, so that the switch sends the target data packet to The centralized session synchronization device, so that the centralized session synchronization device sends the target data packet to the application server group according to the locally stored session of the centralized session synchronization device, wherein the locally stored session of the centralized session synchronization device is: Sessions obtained from the synchronization of various load balancing devices in the cloud computing network.

It should be noted that other implementations of the message sending method implemented by executing the computer program stored in the computer-readable storage medium are the same as the message sending applied to the load balancing device mentioned in the foregoing method embodiment section. The method is implemented in the same manner, and will not be repeated here.

The computer program stored in the computer-readable storage medium provided by the embodiment of the present invention can realize: after the load balancing device receives the target data packet sent by the exchange, the load balancing device locally searches for the session corresponding to the target data packet. When it arrives, the target data packet is sent to the switch, the switch sends the target data packet to the centralized session synchronization device, and the centralized session synchronization device sends the target data packet to the application server group. It can be seen that the computer program stored in the computer-readable storage medium provided by the embodiment of the present invention can realize the sending of the target data packet by the centralized session synchronization device when the session corresponding to the target data packet does not exist locally on the load balancing device, This avoids excessive CPU resource occupation caused by the need to store session information of all load balancing devices in the cluster on the load balancing devices in the cloud computing network, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

An embodiment of the present invention further provides another computer-readable storage medium, where the computer-readable storage medium is a storage medium of a switch in a cloud computing network, where the cloud computing network includes: a switch, a load balancing device, and a centralized session synchronization device, A computer program is stored in the computer-readable storage medium to execute the method steps for sending a message applied to a switch in a cloud computing network.

Specifically, the above message sending method includes:

Receive the target data message;

Route allocation to the target data packet, determine the load balancing device for forwarding the target data packet, and send the target data packet to the determined load balancing device, so that the determined load balancing device is in the determined load balancing device. Find the session corresponding to the target data packet in the session stored locally on the load balancing device;

Receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device, so that the centralized session synchronization device The session is to send the target data message to the application server group, wherein the session stored locally by the centralized session synchronization device is: the session obtained from the synchronization of each load balancing device in the cloud computing network.

It should be noted that other implementations of the message sending method realized by executing the computer program stored in the computer-readable storage medium above are different from the message sending method applied to the switch mentioned in the foregoing method embodiment section. The implementation method is the same, and will not be repeated here.

The computer program stored in the computer-readable storage medium provided by the embodiment of the present invention can realize: the switch sends the received target data packet to the load balancing device determined after routing allocation, and the load balancing device locally After the session corresponding to the target data packet is not searched, the target data packet sent by the load balancing device is received and sent to the centralized session synchronization device, and the centralized session synchronization device sends the target data packet to the application server group. It can be seen that the computer program stored in the computer-readable storage medium provided by the embodiment of the present invention can realize the sending of the target data packet by the centralized session synchronization device when the session corresponding to the target data packet does not exist locally on the load balancing device, This avoids excessive CPU resource occupation caused by the need to store session information of all load balancing devices in the cluster on the load balancing devices in the cloud computing network, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

An embodiment of the present invention further provides another computer-readable storage medium, where the computer-readable storage medium is a storage medium of a centralized session synchronization device in a cloud computing network, where the cloud computing network includes: a switch, a load balancing device, and a centralized In the session synchronization device, a computer program is stored in the computer-readable storage medium, and the computer program is used to execute the method steps of the message sending applied to the centralized session synchronization device in the cloud computing network.

Specifically, the above message sending method includes:

Receive the target data packet sent by the switch; wherein, the target data packet is sent to the switch by the load balancing device that has received the target data packet after not finding the session corresponding to the target data packet in the session stored locally by itself target data message;

The target data packet is sent to the application server farm according to the locally stored session of the centralized session synchronization device.

It should be noted that other implementations of the message sending method implemented by executing the computer program stored in the computer-readable storage medium above are the same as those mentioned in the foregoing method embodiment section and applied to the centralized session synchronization device. The implementation manner of the text sending method is the same, which is not repeated here.

The computer program stored in the computer-readable storage medium provided by the embodiment of the present invention can realize: after the centralized session synchronization device receives the target data message sent by the exchange, according to the locally stored session of the centralized session synchronization device, the target data The message is sent to the application server farm. It can be seen that the computer program stored in the computer-readable storage medium provided by the embodiment of the present invention can realize the sending of the target data packet by the centralized session synchronization device when the session corresponding to the target data packet does not exist locally on the load balancing device, This avoids excessive CPU resource occupation caused by the need to store session information of all load balancing devices in the cluster on the load balancing devices in the cloud computing network, thereby improving the session management capability of a single load balancing device and the ability of the entire cluster to forward user traffic.

Embodiments of the present invention also provide a computer program product containing instructions, which, when running on a computer, cause the computer to execute the above-mentioned packet sending method applied to a load balancing device in a cloud computing network.

Embodiments of the present invention also provide a computer program, which, when running on a computer, causes the computer to execute the above-mentioned method for sending packets applied to a load balancing device in a cloud computing network.

Embodiments of the present invention also provide another computer program product containing instructions, which, when running on a computer, cause the computer to execute the above-mentioned method for sending a packet applied to a switch in a cloud computing network.

The embodiment of the present invention also provides another computer program, which, when running on the computer, causes the computer to execute the above-mentioned packet sending method applied to the switch in the cloud computing network.

Embodiments of the present invention also provide another computer program product containing instructions, which, when running on a computer, cause the computer to execute the above-mentioned message sending method applied to a centralized session synchronization device in a cloud computing network.

The embodiment of the present invention also provides another computer program, which, when running on a computer, causes the computer to execute the above-mentioned method for sending a message applied to a centralized session synchronization device in a cloud computing network.

For the apparatus, system, electronic device, storage medium, computer program product containing instructions, and computer program embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for relevant details, please refer to the partial description of the method embodiments That's it.

It should be noted that the apparatus, system, electronic device, storage medium, computer program product containing instructions, and computer program in the embodiments of the present invention are apparatuses, electronic equipment, storage media, and computers containing instructions that apply the above-mentioned message sending method, respectively. Program product and computer program, all the above-mentioned embodiments of the message sending method are applicable to the device, electronic device, storage medium, computer program product and computer program containing instructions, and can achieve the same or similar beneficial effects.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

Each embodiment in this specification is described in a related manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims (42)

1. A message sending method, characterized in that it is applied to a load balancing device in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device and a centralized session synchronization device, the method comprising: Receive the target data message sent by the switch; In the locally stored session of the load balancing device that has received the target data packet, search for the session corresponding to the target data packet; if the search fails, send the target data packet to the switch, so that the The switch sends the target data packet to the centralized session synchronization device, so that the centralized session synchronization device sends the target data packet to the centralized session synchronization device according to the locally stored session of the centralized session synchronization device. The application server farm, wherein the locally stored session of the centralized session synchronization device is: the session obtained from the synchronization of each load balancing device in the cloud computing network. 2. The method according to claim 1, wherein the method further comprises: Send a control packet to the centralized session synchronization device through the switch, so that the centralized session synchronization device performs information synchronization according to the control packet, where the control packet is used for information synchronization message. 3. The method according to claim 2, wherein the sending a control packet to the centralized session synchronization device through the switch comprises: determining that a session that satisfies a preset synchronization condition among the sessions stored locally by the load balancing device is a session to be synchronized; Send a control message including the to-be-synchronized session to the centralized session synchronization device through the switch. 4. The method according to claim 3, wherein the preset synchronization condition comprises a first preset sub-synchronization condition and a second preset sub-synchronization condition; The first preset sub-synchronization condition is: the session duration is greater than or equal to the session duration preset value; The second preset sub-synchronization condition is: the number of data packets forwarded through the session exceeds or equals to the preset value of the number of forwarded data packets. 5. The method according to claim 2, wherein the sending a control packet to the centralized session synchronization device through the switch comprises: Detecting whether the state of a target session changes, wherein the target session is: a local session that has been synchronized to the centralized session synchronization device; If it is detected that the state of the target session changes, a control packet containing the state of the target session is sent to the centralized session synchronization device through the switch. 6. A message sending method, characterized in that it is applied to a centralized session synchronization device in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device and a centralized session synchronization device, the method comprising: Receive the target data packet sent by the switch; wherein the target data packet is a session corresponding to the target data packet that is not found in the session stored locally by the load balancing device that has received the target data packet Then, the target data message sent to the switch; The target data message is sent to the application server group according to the locally stored session of the centralized session synchronization device. 7. The method according to claim 6, wherein the method further comprises: receiving a control packet sent by the switch; wherein the control packet is a packet sent by the load balancing device to the switch for information synchronization; Information synchronization is performed according to the control message. 8. The method according to claim 6 or 7, wherein the sending the target data packet to an application server group according to a session stored locally in a centralized session synchronization device, comprises: The main CPU core of the centralized session synchronization device determines the first session corresponding to the target data packet from the locally stored sessions of the centralized session synchronization device; According to a preset hash algorithm, hash calculation is performed on the attribute of the first session, and according to the calculation result, a target CPU core is selected from the CPU cores of the centralized session synchronization device; The target CPU core is scheduled so that the target CPU core sends the target data packet to the application server group according to the first session. 9. The method according to claim 8, wherein the method further comprises: The target CPU core updates the timeout start time of the first session to the completion time of sending the target data packet. 10. The method according to claim 9, wherein the method further comprises: The target CPU core detects whether the session timeout duration of the first session reaches a preset duration according to the updated timeout start time of the first session, and if the session timeout duration of the first session reaches the preset duration , destroying the first session. 11. The method according to claim 7, wherein the performing information synchronization according to the control message comprises: The main CPU core of the centralized session synchronization device determines the second session corresponding to the control message; According to a preset hash algorithm, hash calculation is performed on the attribute of the second session, and according to the calculation result, a target CPU core is selected from the CPU cores of the centralized session synchronization device; The target CPU core is scheduled to perform information synchronization according to the second session. 12. The method of claim 11, wherein the method further comprises: The target CPU core updates the timeout start time of the second session to the information synchronization completion time. 13. The method of claim 12, wherein the method further comprises: The target CPU core detects whether the session timeout duration of the second session reaches a preset duration according to the updated timeout start time of the second session, and if the session timeout duration of the second session reaches the preset duration , destroying the second session. 14. A message sending method, characterized in that it is applied to a switch in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device and a centralized session synchronization device, the method comprising: Receive the target data message; Perform route allocation on the target data packet, determine a load balancing device for forwarding the target data packet, and send the target data packet to the determined load balancing device, so that the determined load balancing device The device searches for the session corresponding to the target data packet in the locally stored session of the determined load balancing device; Receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device, so that the centralized session synchronization device the locally stored session of the centralized session synchronization device, and send the target data message to the application server group, wherein the locally stored session of the centralized session synchronization device is: Sessions obtained by the load balancing device synchronously. 15. The method of claim 14, wherein the method further comprises: Receive a control packet sent by a load balancing device, and send the control packet to the centralized session synchronization device, so that the centralized session synchronization device performs information synchronization according to the control packet, wherein the The control message is a message used for information synchronization. 16. A message sending device, characterized in that it is applied to a load balancing device in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device and a centralized session synchronization device, the device comprising: The first receiving module is used for receiving the target data message sent by the switch; a first search module, configured to search for the session corresponding to the target data packet in the session stored locally by the load balancing device that has received the target data packet; a first sending module, configured to send the target data message to the switch when the session corresponding to the target data message fails to be searched, so that the switch sends the target data message to the centralized A session synchronization device, so that the centralized session synchronization device sends the target data packet to the application server group according to the session stored locally by the centralized session synchronization device, wherein the centralized session synchronization device The locally stored session is a session obtained synchronously from each load balancing device in the cloud computing network. 17. A message sending device, characterized in that it is applied to a centralized session synchronization device in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device and a centralized session synchronization device, the device comprising: A ninth receiving module, configured to receive a target data packet sent by a switch; wherein, the target data packet is a load balancing device that has received the target data packet and does not find the target data packet in a session stored locally by itself The target data packet sent to the switch after the session corresponding to the target data packet; The fifth sending module is configured to send the target data message to the application server group according to the session stored locally in the centralized session synchronization device. 18. The apparatus of claim 17, wherein the apparatus further comprises: The first synchronization module is configured to receive a control packet sent by the switch; perform information synchronization according to the control packet; wherein the control packet is a packet sent by the load balancing device to the switch for information synchronization. 19. The apparatus according to claim 17 or 18, wherein the fifth sending module comprises a fifth sending sub-module; The fifth sending submodule is configured to schedule the main CPU core of the centralized session synchronization device, and determine the first session corresponding to the target data packet from the sessions stored locally by the centralized session synchronization device; It is also used to schedule the main CPU core of the centralized session synchronization device to perform hash calculation on the attribute of the first session according to a preset hash algorithm, and according to the calculation result, from the CPU of the centralized session synchronization device selecting a target CPU core from among the cores; it is also used to schedule the main CPU core of the centralized session synchronization device, and further schedule the target CPU core, so that the target CPU core sends the target datagram to the target datagram according to the first session. The message is sent to the application server farm. 20. The apparatus according to claim 19, wherein the apparatus further comprises: a second clock module; The second clock module is configured to schedule the target CPU core to update the timeout start time of the first session to the completion time of sending the target data message. 21. The apparatus of claim 20, wherein The second clock module is further configured to schedule the target CPU core to detect whether the session timeout duration of the first session has reached a preset duration according to the updated timeout start time of the first session, and if the When the session timeout duration of the first session reaches a preset duration, the first session is destroyed. 22. The apparatus of claim 18, wherein the first synchronization module comprises a first synchronization sub-module; The first synchronization submodule is used to schedule the main CPU core of the centralized session synchronization device to determine the second session corresponding to the control message; and is also used to schedule the main CPU core of the centralized session synchronization device according to A preset hash algorithm, which performs hash calculation on the attributes of the second session, and selects a target CPU core from the CPU cores of the centralized session synchronization device according to the calculation result; and is also used for scheduling the centralized session The main CPU core of the synchronization device further schedules the target CPU core to perform information synchronization according to the second session. 23. The apparatus according to claim 22, wherein the apparatus further comprises: a third clock module; The third clock module is configured to schedule the target CPU core to update the timeout start time of the second session to the information synchronization completion time. 24. The apparatus of claim 23, wherein The third clock module is further configured to schedule the target CPU core to detect whether the session timeout duration of the second session reaches a preset duration according to the updated timeout start time of the second session, and if the The session timeout duration of the second session reaches the preset duration, and the second session is destroyed. 25. A message sending device, characterized in that it is applied to a switch in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device and a centralized session synchronization device, the device comprising: The second receiving module is used to receive the target data message; a first distribution module, configured to perform route distribution on the target data packet, determine a load balancing device for forwarding the target data packet, and send the target data packet to the determined load balancing device, so that the determined load balancing device searches for the session corresponding to the target data packet in the locally stored session of the determined load balancing device; a third receiving module, configured to receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device, so that the The centralized session synchronization device sends the target data message to the application server group according to the locally stored session of the centralized session synchronization device, wherein the locally stored session of the centralized session synchronization device is: The session obtained by each load balancing device in the cloud computing network is synchronized. 26. A message sending system, characterized in that the system comprises: a switch, a load balancing device and a centralized session synchronization device; wherein, The switch is configured to receive the target data message; perform route allocation on the target data message, determine a load balancing device for forwarding the target data message; send the target data message to the determined load balancing equipment; The load balancing device is configured to receive the target data packet sent by the switch; in the locally stored session of the load balancing device, search for a session corresponding to the target data packet; if the search fails, the sending the target data message to the switch; The switch is further configured to receive the target data packet sent by the determined load balancing device after the session search fails, and send the target data packet to the centralized session synchronization device; The centralized session synchronization device is configured to receive the target data packet sent by the switch, and send the target data packet to the application server group according to the session stored locally by the centralized session synchronization device, Wherein, the locally stored session of the centralized session synchronization device is: the session obtained from the synchronization of each load balancing device in the system. 27. The system of claim 26, wherein The load balancing device is further configured to send a control message to the switch; The switch is further configured to receive the control message sent by the load balancing device, and send the control message to the centralized session synchronization device; The centralized session synchronization device is further configured to receive the control message sent by the switch, and perform information synchronization according to the control message, where the control message is a message used for information synchronization. 28. The system of claim 27, wherein The load balancing device is specifically configured to determine a session that satisfies a preset synchronization condition among the sessions stored locally by the load balancing device as a to-be-synchronized session, and send a control packet including the to-be-synchronized session to the switch; The switch is specifically configured to receive the control packet including the to-be-synchronized session sent by the load balancing device, and send the control packet including the to-be-synchronized session to the centralized session synchronization device ; The centralized session synchronization device is specifically configured to receive the control message including the to-be-synchronized session sent by the switch. 29. The system according to claim 28, wherein the preset synchronization condition comprises a first preset sub-synchronization condition and a second preset sub-synchronization condition; The first preset sub-synchronization condition is: the session duration is greater than or equal to the session duration preset value; The second preset sub-synchronization condition is: the number of data packets forwarded through the session exceeds or equals to the preset value of the number of forwarded data packets. 30. The system of claim 27, wherein The load balancing device is specifically configured to detect whether the state of the target session changes, wherein the target session is: a local session that has been synchronized to the centralized session synchronization device; if the state of the target session is detected to change , sending a control message containing the state of the target session to the switch; The switch is specifically configured to receive the control packet including the state of the target session sent by the load balancing device, and send the control packet including the state of the target session to the centralized session sync device; The centralized session synchronization device is specifically configured to receive the control message including the state of the target session sent by the switch. 31. The system of any one of claims 26-30, wherein The centralized session synchronization device is specifically configured to schedule the main CPU core of the centralized session synchronization device, and from the locally stored sessions of the centralized session synchronization device, determine the first corresponding to the target data packet. session; perform hash calculation on the attributes of the first session according to a preset hash algorithm, and select a target CPU core from the CPU cores of the centralized session synchronization device according to the calculation result; schedule the target CPU core , so that the target CPU core sends the target data packet to the application server group according to the first session. 32. The system of claim 31, wherein The centralized session synchronization device is further configured to schedule the target CPU core to update the timeout start time of the first session to the completion time of sending the target data message. 33. The system of claim 32, wherein The centralized session synchronization device is further configured to schedule the target CPU core to detect whether the session timeout duration of the first session reaches a preset duration according to the updated timeout start time of the first session, and if the When the session timeout duration of the first session reaches a preset duration, the first session is destroyed. 34. The system of claims 27-30, wherein The centralized session synchronization device is specifically configured to schedule the main CPU core of the centralized session synchronization device to determine the second session corresponding to the control packet; Hash calculation is performed on the attribute, and according to the calculation result, a target CPU core is selected from the CPU cores of the centralized session synchronization device; the target CPU core is scheduled to perform information synchronization according to the second session. 35. The system of claim 34, wherein The centralized session synchronization device is further configured to schedule the target CPU core to update the timeout start time of the second session to the information synchronization completion time. 36. The system of claim 35, wherein The centralized session synchronization device is further configured to schedule the target CPU core to detect whether the session timeout duration of the second session reaches a preset duration according to the updated timeout start time of the second session, and if the When the session timeout duration of the second session reaches a preset duration, the second session is destroyed. 37. An electronic device, characterized in that the electronic device is a load balancing device in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device and a centralized session synchronization device, the load balancing device comprising : processor and memory; memory for storing computer programs; The processor is configured to implement the method steps described in any one of claims 1-5 when executing the program stored in the memory. 38. A computer-readable storage medium, wherein the computer-readable storage medium is a storage medium of a load balancing device in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device, and a centralized session A synchronization device, a computer program is stored in the computer-readable storage medium, and the computer program implements the method steps described in any one of claims 1-5 when the computer program is executed by the processor. 39. An electronic device, characterized in that the electronic device is a centralized session synchronization device in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device, and a centralized session synchronization device, the centralized The session synchronization device includes: a processor and a memory; memory for storing computer programs; The processor is configured to implement the method steps described in any one of claims 6-13 when executing the program stored in the memory. 40. A computer-readable storage medium, wherein the computer-readable storage medium is a storage medium of a centralized session synchronization device in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device, and a centralized The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the method steps of any one of claims 6-13 are implemented. 41. An electronic device, characterized in that the electronic device is a switch in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device and a centralized session synchronization device, the switch comprising: a processor and a memory; memory for storing computer programs; The processor is configured to implement the method steps described in any one of claims 14-15 when executing the program stored in the memory. 42. A computer-readable storage medium, wherein the computer-readable storage medium is a storage medium of a switch in a cloud computing network, the cloud computing network comprising: a switch, a load balancing device, and a centralized session synchronization device , a computer program is stored in the computer-readable storage medium, and when the computer program is executed by the processor, the method steps of any one of claims 14-15 are implemented.