WO2016065545A1

WO2016065545A1 - Information updating method, apparatus, and device

Info

Publication number: WO2016065545A1
Application number: PCT/CN2014/089758
Authority: WO
Inventors: 徐君; 朱冠宇; 姜旭栋
Original assignee: 华为技术有限公司
Priority date: 2014-10-29
Filing date: 2014-10-29
Publication date: 2016-05-06
Also published as: CN105765948A

Abstract

Provided is an information updating method, the method comprising: receiving an information updating request message including information to be updated and a copy group number; inquiring a copy group information list according to the copy group number, and obtaining a node number, the copy group information list including a corresponding relationship between the copy group number and the node number; sending the information to be updated to the node corresponding to the node number, such that the node updates the information according to the information to be updated. The present invention, due to direct forwarding the information updating request message to all nodes numbers of a storage copy by a switch, reduces forwarding times when sending the information updating request message and eliminates waiting time, thus saving time and having high efficiency. The present invention also enables a client to receive the response information in time, and avoids time consumption caused by waiting for all nodes to complete the information updating, thus saving time and improving efficiency.

Description

Method, device and device for updating information

Technical field

The present invention relates to the field of computers, and in particular, to a method, device and device for updating information.

Background technique

In a distributed file system, multiple copies are usually used for data layout to coordinate load and failure recovery. However, for the problem of inconsistent multi-copy update caused by information update, there are usually the following ideas: (1) After the primary copy is updated, the neighbor forwarding message mode is initiated: the message is updated by forwarding to all or part of the neighbor nodes. (2) Copy tree mode: The primary copy is the root node. When the update message is forwarded by the neighbor node for the first time, an n-tree consisting of all replica nodes is established. The subsequent update messages are only here. In the "tree".

There are currently several ways to update information in multiple copies: synchronous updates, asynchronous updates, and strong consistent asynchronous updates. Synchronous update: The number of copies N, the primary copy is updated first, and then the update command is broadcast to all secondary copies until all the secondary copies are updated, and the update confirmation is returned before the update success information is returned. Asynchronous update: the number of copies N, the primary copy is updated first, and then the update command is broadcast to all secondary copies. When any of the secondary copies returns an update confirmation, the update success information is returned, and the other secondary copies continue to be asynchronously updated. Strongly consistent asynchronous update: the number of copies N, the primary copy is updated first, and then the primary copy updates the command according to the secondary copy location information saved in the node, and waits for the copy update confirmation, when there is W>N/2 After the update confirmation returns, the update is successful. Subsequent guarantees that only R (W+R>N) read returns ensure that the latest data can be read.

However, the existing information update method needs to update the primary and secondary copies step by step, waiting for the primary copy to be updated and then performing the secondary copy broadcast and update, which takes time; and additionally updating the request information broadcast mode, it is necessary to repeatedly update the update request information. And multi-level indirect forwarding update request information, which is time consuming, Inefficiency is not conducive to the provision of the latest data services in the first time.

Summary of the invention

In view of this, the embodiment of the present invention provides a method, a device, and a device for updating information to solve the problem caused by step-by-step updating of primary and secondary copies, multiple forwardings, and multi-level indirect forwarding update request information in the prior art. When the efficiency is low.

In a first aspect, an embodiment of the present invention provides a method for updating an information, the method comprising:

Receiving an information update request message, where the information update request message includes: information to be updated and a copy group number;

Querying the copy group information table according to the copy group number, and obtaining a node number, where the copy group information table includes: the copy group number, and the corresponding relationship of the node number;

Sending the to-be-updated information to a node corresponding to the node number, so that the node completes information update according to the to-be-updated information.

In a first possible implementation manner of the first aspect, the node includes a first node and a second node;

Receiving the information update success information sent by the first node, using the first node as a master node;

The node number of the first node is saved in the copy group information table.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation, after receiving the information update failure information sent by the second node, the first node is instructed to the second node Sending the information to be updated, so that the second node completes the information update according to the information to be updated.

In conjunction with the first aspect or the first or second possible implementation of the first aspect, in a third possible implementation, the information update request message includes write request information and read request information, the write request The information is request information indicating a write operation, and the read request information indicates a browsing operation Request information.

In a second aspect, an embodiment of the present invention provides an apparatus for updating information, where the apparatus includes:

a receiving unit, configured to receive an information update request message, where the information update request message includes: information to be updated and a copy group number;

a processing unit, configured to query the copy group information table according to the copy group number, to obtain a node number, where the copy group information table includes: the copy group number, and the corresponding relationship of the node number;

And a sending unit, configured to send the information to be updated to a node corresponding to the node number, so that the node completes information update according to the information to be updated.

In a first possible implementation manner of the second aspect, the node includes a first node and a second node;

The processing unit is further configured to: when receiving the information update success information sent by the first node, using the first node as a master node;

The node number of the first node is saved in the copy group information table.

With reference to the first possible implementation of the second aspect, in a second possible implementation, the processing unit is further configured to: after receiving the information update failure information sent by the second node, indicating the The node sends the information to be updated to the second node, so that the second node completes the information update according to the information to be updated.

With reference to the second aspect or the first or second possible implementation manner of the second aspect, in a third possible implementation manner, the information update request message includes write request information and read request information, and the write request The information is request information indicating a write operation, and the read request information is request information indicating a browsing operation.

In a third aspect, an embodiment of the present invention provides an apparatus for updating information, where the apparatus includes:

Network Interface;

processor;

Memory

An application physically stored in the memory, the application comprising The processor and the device execute instructions of the following process:

In a first possible implementation of the third aspect, the node comprises a first node, a second node; the application further comprising instructions operable to cause the processor and the device to perform the following process:

The node number of the first node is saved in the copy group information table.

In conjunction with the first possible implementation of the third aspect, in a second possible implementation, the application further includes instructions operable to cause the processor and the device to perform the following process:

And after receiving the information update failure information sent by the second node, instructing the first node to send the to-be-updated information to the second node, so that the second node completes information update according to the to-be-updated information.

With reference to the third aspect or the first or second possible implementation manner of the third aspect, in a third possible implementation, the application further includes: the processor and the device are configured to perform the following Instruction of the process:

The information update request message includes write request information and read request information, the write request information is request information indicating a write operation, and the read request information is request information indicating a browsing operation.

The information update method provided by the embodiment of the present invention receives an information update request message by using a switch, where the information update request message includes: information to be updated and a copy group number; and querying the copy group information table according to the copy group number to obtain a node number Sending the to-be-updated information to the node number pair The node in question causes the node to complete the information update according to the information to be updated. Since the switch directly forwards the information update request information to all node numbers of the storage copy, the number of times of forwarding is reduced when the information update request information is sent, and there is no waiting, saving time and high efficiency. The client can receive the response information in time, avoid waiting for all the node update information to be completed, and time-consuming, saving time and high efficiency.

DRAWINGS

FIG. 1 is a schematic diagram of a scenario for updating an information according to an embodiment of the present invention;

2 is a flowchart of a method for updating information according to Embodiment 1 of the present invention;

3 is a signaling diagram of a method for updating information according to Embodiment 2 of the present invention;

4 is a schematic diagram of an apparatus for updating information according to Embodiment 3 of the present invention;

FIG. 5 is a schematic diagram of an apparatus for updating information according to Embodiment 4 of the present invention.

detailed description

In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the embodiments of the present invention are further described in detail below. It is apparent that the described embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The technical solution of the information update of the present invention can be applied to various scenarios such as email update, document update, and webpage update.

The client in the embodiment of the present invention can change information and review information, such as a mobile phone, a tablet computer, a notebook computer, a desktop computer, and the like.

The switch in the embodiment of the present invention may be a switch that is responsible for sending or forwarding information update request information, and establishing information forwarding between the client and the node, or is responsible for the sender client. The sent change request information is forwarded to the corresponding node for processing.

The node in the embodiment of the present invention may be a server, which is responsible for receiving the information update request information sent by the switch, and correspondingly processing the copy in the node according to the information update request information, sending a response message to the switch, or receiving the switch. After the change request information is sent, and the copy in the server is changed according to the change request information, the update success information is sent to the switch.

The information update request information in the embodiment of the present invention includes changing document information, or writing an email, or changing webpage information, or browsing a webpage.

FIG. 1 is a schematic diagram of a scenario for updating an information according to an embodiment of the present invention. As shown in FIG. 1 , for example, when the user changes the webpage information through the computer client, the switch receives the request information of the changed webpage information sent by the client, and the webpage information includes the webpage information to be changed and the copy group number, and the switch according to the copy group. No. G2 queries the copy group information table. The copy group information table includes: the copy group number G2 and the server number N2, N3, and N4 of the storage copy. The switch obtains the server numbers N2, N3, and N4, and the switch numbers the servers N2, N3, and N4. The corresponding server sends the request information for changing the webpage information, and when the servers N2, N3, and N4 update the stored copy according to the information update request information, the update success information is sent to the switch, and the number of update success information received by the switch is When half of the servers N2, N3, and N4 are half (assuming that the update success information of the servers N2 and N4 is received), the response information corresponding to the information update request information is sent to the computer client, and at this time, the user can pass the computer. The client browses the changed web page information. The server N3 that has not received the update success information continues to update the copy, so that the node completes the information update according to the information to be updated.

Embodiment 1

The following is a detailed description of the method for updating information according to the first embodiment of the present invention, and FIG. 2 is a flowchart of a method for updating information according to the first embodiment of the present invention. The switch specifically includes the following steps:

Step 201: The switch receives an information update request message, where the information update request message includes: information to be updated and a copy group number.

For example, the information update request information may be changing document information, or writing an email, or changing/adding webpage information, or browsing a webpage or the like. The document information is changed, the mail is written, the webpage information is changed/added, and the like, and the request information of the write operation is summarized into the write request information, which is similar to the browse webpage, and the request information that the write operation is not the read operation is summarized as the read request information. The information update request information is then divided into write request information and read request information.

For example, when the user changes the webpage information (write request information) on the computer client, the client sends the request information for changing the webpage information to the switch, and the switch receives the information update request information sent by the client.

When multiple users perform change webpage information on multiple computer clients, at this time, multiple clients simultaneously send request information for changing webpage information to the switch, and the switch simultaneously receives multiple write request information sent by multiple clients.

Optionally, the switch receives multiple write request information sent by multiple clients at the same time, and when the multiple write request information belongs to the same copy group, only the write request information sent by the first client is received, The clients include the first client.

For example, the switch receives the write request information of multiple changed webpage information sent by multiple clients at the same time. When the write request information of the plurality of changed webpage information belongs to the same copy group G2, the switch only receives the changed webpage information sent by the first client. Request information, the plurality of clients include the first client, that is, the first client is one of the plurality of clients.

The switch only receives one client, instead of the request information for changing the webpage information sent by multiple clients, because it is not easy to control if multiple clients make changes to the same webpage at the same time. In the embodiment of the present invention, a distributed lock may be installed on the switch to control the switch to receive only the request information of the changed webpage information sent by the first client, and the first client may be customized in multiple clients. The highest priority client in the terminal. Optionally, after the priorities of the multiple clients are sorted, the switch receives the changed webpage information sent by multiple clients in an orderly manner through the distributed lock. To write the request information, it is only necessary to ensure that the switch receives only one write request message sent by the client at the same time.

However, the switch can simultaneously receive multiple read request messages sent by multiple clients.

Step 202: The switch queries the copy group information table according to the copy group number to obtain a node number.

The copy group information table includes: a correspondence between the copy group number and the node number. The copy group information table can be saved in the switch.

The node can be a server; the node number can be a server code. The copy group information table is the copy group number and the node number of the copy group number corresponding to the storage copy.

For example, the switch queries the copy group information table according to the copy group number G2, and the copy group information table includes: a copy group number G2 and a server code N2, N3, and N4, and acquires node numbers N2, N3, and N4. As shown in Table 1, the copy group information table corresponds to the node number of the storage copy.

Table I

副本组号Copy group number	节点号Node number
副本组号Copy group number	节点号Node number	G1G1	N1,N2,N3N1, N2, N3
G2G2	N2,N3,N4N2, N3, N4	G1G1	N1,N2,N3N1, N2, N3
G2G2	N2,N3,N4N2, N3, N4	G3G3	N5,N6,N7N5, N6, N7
G4G4	N6,N8,N9N6, N8, N9	G3G3	N5,N6,N7N5, N6, N7
G4G4	N6,N8,N9N6, N8, N9	…...	…...
GmGm	Ni,Nj,NkNi, Nj, Nk	…...	…...

Step 203: The switch sends the information to be updated to the node corresponding to the node number, so that the node completes the information update according to the information to be updated.

The switch sends the to-be-updated information to the node N2, the node N3, and the node N4 corresponding to the node number N2, N3, N4, so that the node N2, the node N3, and the node N4 update the copy in the respective node according to the information to be updated, and Receive update success information sent by the node.

For example, the switch sends the to-be-updated information to the server code N2, N3, and N4. Server N2, server N3 and server N4, such that server N2, server N3 and server N4 receive the update success information sent by the server when the copy stored in the respective server is updated according to the update to be updated. The server N2 updates the copy in the server N2. After the update is successful, the server N2 sends the update success information to the switch; the server N4 updates the copy in the server N4. After the update is successful, the server N4 sends the update success information to the switch. If the server N3 has not updated the copy, the update success information is not sent to the switch.

Optionally, the node includes a first node and a second node;

And when the switch receives the information update success information sent by the first node, the first node is used as a master node; and the node number of the first node is saved in the copy group information table.

For example, when the switch receives two update success messages sent by the server N2 and the server N4, the replicas of the server N2 and the server N4 are taken as the master copy; the codes of the server N2 and the server N4, N2 and N4 are saved in the copy group of the switch. In the information table, the switch group information table of the switch at this time increases the node number of the storage master copy. As shown in Table 2, the copy group information table after the node number is saved, each copy group number corresponds to the node number of the storage copy, and the node number of the storage main copy corresponds.

Table II

副本组号Copy group number	节点号Node number	主节点号Master node number
副本组号Copy group number	节点号Node number	主节点号Master node number	G1G1	N1,N2,N3N1, N2, N3	N1,N2N1, N2
G2G2	N2,N3,N4N2, N3, N4	N2,N4N2, N4	G1G1	N1,N2,N3N1, N2, N3	N1,N2N1, N2
G2G2	N2,N3,N4N2, N3, N4	N2,N4N2, N4	G3G3	N5,N6,N7N5, N6, N7	N6,N7N6, N7
G4G4	N6,N8,N9N6, N8, N9	N6,N8N6, N8	G3G3	N5,N6,N7N5, N6, N7	N6,N7N6, N7
G4G4	N6,N8,N9N6, N8, N9	N6,N8N6, N8	…...	…...	…...
GmGm	Ni,Nj,NkNi, Nj, Nk	Nx,NyNx, Ny	…...	…...	…...

Optionally, after receiving the information update failure information sent by the second node, the switch instructs the first node to send the to-be-updated information to the second node, so that the second node is to be updated according to the Information completion information update.

Optionally, when the time threshold is reached, if the node has not updated the information to be updated, the update failure information is sent to the switch.

For example, the time threshold may be a customized value, such as 1 minute. After the server N3 receives the information to be updated for 1 minute, if the server N3 has not completed the update copy, the server N3 sends an update failure message to the switch, at this time, the switch After receiving the information update failure information sent by the server N3, the server N2 or the server N4 is instructed to send the information to be updated to the server N3. Specifically, the server N2 or the server N4 sends the master copy to the server N3, and the server N3 updates the acquired master copy. The copy causes the server N3 to complete the information update according to the information to be updated.

The method for updating information according to the first embodiment of the present invention receives an information update request message by using a switch, where the information update request message includes: information to be updated and a copy group number; and querying the copy group information table according to the copy group number to acquire a node Sending the information to be updated to the node corresponding to the node number, so that the node completes the information update according to the information to be updated. The switch forwards the information update request information directly to all the node numbers of the storage copy, so that the number of times of forwarding is reduced when the information update request information is sent, without waiting, saving time and high efficiency. The client can receive the response information in time, avoid waiting for all the node update information to be completed, and time-consuming, saving time and high efficiency. After receiving the information update failure information sent by the second node, instructing the first node to send the to-be-updated information to the second node, so that the second node completes information update according to the to-be-updated information, Make all nodes quick and easy to complete information updates.

Embodiment 2

FIG. 3 is a signaling diagram of a method for updating information according to Embodiment 2 of the present invention. As shown in FIG. 3, the signaling interaction process of the method for updating information provided by Embodiment 2 of the present invention is described in detail below, and the method includes the following steps:

In step 301, the client sends update request information to the switch.

The information update request message includes: information to be updated and a copy group number.

Step 302: The switch queries the copy group information table according to the copy group number to obtain a node number.

The copy group information table includes: a copy group number, and a correspondence relationship between the node numbers;

Step 303: The switch sends the information to be updated to the node corresponding to the node number, so that the node completes the information update according to the information to be updated.

The node includes a first node and a second node.

Step 304: The node updates the copy according to the update request information.

Step 305: When the switch receives the information update success information sent by the first node, the first node is used as the master node.

If the node update information is successful, an update success message is sent to the switch.

Step 306: Save the node number of the first node in the copy group information table.

Step 307: When the number of update completion information received by the switch is half of the number of nodes, the response information corresponding to the information update request information is sent to the client.

Step 308: After receiving the information update failure information sent by the second node, instructing the first node to send the to-be-updated information to the second node.

And the second node is configured to complete information update according to the information to be updated.

Step 309: The first node sends a primary copy to the second node.

In step 310, the second node updates the copy by acquiring the master copy.

The information update method provided by the second embodiment of the present invention receives an information update request message by using a switch, where the information update request message includes: information to be updated and a copy group number; and querying the copy group information table according to the copy group number to obtain a node Sending the information to be updated to the node corresponding to the node number, so that the node completes the information update according to the information to be updated. The switch forwards the information update request information directly to all the node numbers of the storage copy, so that the number of times of forwarding is reduced when the information update request information is sent, without waiting, saving time and high efficiency. The client can receive the response information in time, avoid waiting for all the node update information to be completed, and time-consuming, saving time and high efficiency. After receiving the information update failure information sent by the second node, instructing the first node to send the to-be-updated information to the second node, so that the second node is configured according to the The update information completion information update is made, so that all nodes can complete the information update quickly and conveniently.

Embodiment 3

The first embodiment describes a method for updating information by using a switch as an execution subject. Accordingly, the present invention further provides an apparatus for updating information. FIG. 4 is a schematic diagram of an apparatus for updating information according to Embodiment 3 of the present invention. The system for information update includes a receiving unit 401, a processing unit 402, and a transmitting unit 403.

The receiving unit 401 is configured to receive an information update request message, where the information update request message includes: information to be updated and a copy group number;

The processing unit 402 is configured to query the copy group information table according to the copy group number to obtain a node number, where the copy group information table includes: the copy group number, and the corresponding relationship between the node numbers;

The sending unit 403 is configured to send the information to be updated to a node corresponding to the node number, so that the node completes information update according to the information to be updated.

Optionally, the node includes a first node and a second node;

The processing unit is further configured to: when receiving the information update success information sent by the first node, use the first node as a master node; and save the node number of the first node in the copy group information table. .

Optionally, the processing unit is further configured to: after receiving the information update failure information sent by the second node, instructing the first node to send the to-be-updated information to the second node, so that the The two nodes complete the information update according to the information to be updated.

Optionally, the information update request message includes write request information and read request information, the write request information is request information indicating a write operation, and the read request information is request information indicating a browsing operation.

The method for updating information according to Embodiment 3 of the present invention receives an information update request message by using a switch, where the information update request message includes: information to be updated and a copy group number; and querying the copy group information table according to the copy group number to acquire a node Sending the information to be updated to the node corresponding to the node number, so that the node completes the information update according to the information to be updated. Description switch The information update request information is directly forwarded to all node numbers of the storage copy, so that the number of times of forwarding is reduced when the information update request information is sent, without waiting, saving time and high efficiency. The client can receive the response information in time, avoid waiting for all the node update information to be completed, and time-consuming, saving time and high efficiency. After receiving the information update failure information sent by the second node, instructing the first node to send the to-be-updated information to the second node, so that the second node completes information update according to the to-be-updated information, Make all nodes quick and easy to complete information updates.

Embodiment 4

The first embodiment describes a method for updating information by using a switch as an execution subject. Correspondingly, the fourth embodiment of the present invention further provides a device for updating information, which is used to implement the method for updating information in the first embodiment. As shown in FIG. 5, the system includes: a network interface 501, a processor 502, and a memory 503. The system bus 504 is used to connect the network interface 501, the processor 502, and the memory 503.

The network interface 501 is configured to communicate with an Internet of Things terminal, an Internet of Things access gateway, a bearer network, an Internet of Things service gateway, and an application server.

The memory 503 may be a persistent storage such as a hard disk drive and a flash memory having a software module and a device driver therein. The software modules are capable of performing the various functional modules of the above described methods of the present invention; the device drivers can be network and interface drivers.

At startup, these software components are loaded into memory 503 and then accessed by processor 502 and executed as follows:

The node includes a first node and a second node; the application further includes The processor and the device execute instructions of the following process:

The node number of the first node is saved in the copy group information table.

Further, after the processor accesses the software component of the memory 503, the application further includes instructions operable to cause the processor and the device to perform the following process:

After the processor accesses the software component of the memory 503, the application further includes instructions operable to cause the processor and the device to perform the following process:

The information update device provided by the fourth embodiment of the present invention receives an information update request message by using a switch, where the information update request message includes: information to be updated and a copy group number; and querying the copy group information table according to the copy group number to acquire a node Sending the information to be updated to the node corresponding to the node number, so that the node completes the information update according to the information to be updated. The switch forwards the information update request information directly to all the node numbers of the storage copy, so that the number of times of forwarding is reduced when the information update request information is sent, without waiting, saving time and high efficiency. The client can receive the response information in time, avoid waiting for all the node update information to be completed, and time-consuming, saving time and high efficiency. After receiving the information update failure information sent by the second node, instructing the first node to send the to-be-updated information to the second node, so that the second node completes information update according to the to-be-updated information, Make all nodes quick and easy to complete information updates.

A person skilled in the art should further appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, according to the above description The composition and steps of the various examples are generally described. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. The software module can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field. Any other form of storage medium known.

The specific embodiments of the present invention have been described in detail with reference to the preferred embodiments of the present invention. All modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

A method for updating information, characterized in that the method comprises:

Receiving an information update request message, where the information update request message includes: information to be updated and a copy group number;

Querying the copy group information table according to the copy group number, and obtaining a node number, where the copy group information table includes: the copy group number, and the corresponding relationship of the node number;

Sending the to-be-updated information to a node corresponding to the node number, so that the node completes information update according to the to-be-updated information.
The method of claim 1 wherein said node comprises a first node and a second node;

Receiving the information update success information sent by the first node, using the first node as a master node;

The node number of the first node is saved in the copy group information table.
The method according to claim 2, after receiving the information update failure information sent by the second node, instructing the first node to send the to-be-updated information to the second node, so that the The second node completes the information update according to the information to be updated.
The method according to any one of claims 1 to 3, wherein the information update request message includes write request information and read request information, the write request information is request information indicating a write operation, and the read request information Request information indicating the browsing operation.
An apparatus for updating information, characterized in that the apparatus comprises:

a receiving unit, configured to receive an information update request message, where the information update request message includes: information to be updated and a copy group number;

a processing unit, configured to query the copy group information table according to the copy group number, to obtain a node number, where the copy group information table includes: the copy group number, and the corresponding relationship of the node number;

And a sending unit, configured to send the information to be updated to a node corresponding to the node number, so that the node completes information update according to the information to be updated.
The apparatus for updating information according to claim 5, wherein the node comprises a first node and a second node;

The processing unit is further configured to: when receiving the information update success information sent by the first node, use the first node as a master node; and save the node number of the first node in the copy group information table. .
The apparatus for updating information according to claim 6, wherein

The processing unit is further configured to: after receiving the information update failure information sent by the second node, instructing the first node to send the to-be-updated information to the second node, so that the second node is configured according to the The update information completion information update is described.
A device according to any of claims 5-7, wherein

The information update request message includes write request information and read request information, the write request information is request information indicating a write operation, and the read request information is request information indicating a browsing operation.
A device for updating information, characterized in that the device comprises:

Network Interface;

processor;

Memory

An application physically stored in the memory, the application comprising instructions operable to cause the processor to:

Receiving an information update request message, where the information update request message includes: information to be updated and a copy group number;

Querying the copy group information table according to the copy group number, and obtaining a node number, where the copy group information table includes: the copy group number, and the corresponding relationship of the node number;

Sending the to-be-updated information to a node corresponding to the node number, so that the node completes information update according to the to-be-updated information.
The device of claim 9 wherein said node comprises a first node, a second node; said application further comprising instructions operable to cause said processor to:

Receiving the information update success information sent by the first node, using the first node as a master node;

The node number of the first node is saved in the copy group information table.
The device of claim 9 wherein said application further comprises instructions operable to cause said processor to:

And after receiving the information update failure information sent by the second node, instructing the first node to send the to-be-updated information to the second node, so that the second node completes information update according to the to-be-updated information.
The device of any of claims 9-11, wherein the application further comprises instructions operable to cause the processor to:

The information update request message includes write request information and read request information, the write request information is request information indicating a write operation, and the read request information is request information indicating a browsing operation.