CN114501080A - Service content updating method and device, storage medium and electronic equipment - Google Patents

Abstract

The invention provides a service content updating method and device, a storage medium and electronic equipment, wherein the method comprises the following steps: detecting the operation state of a content distribution node in the operation process of the content distribution node; under the condition that the running state of the content distribution node is detected to meet the content updating condition, a content updating request is sent to the central server; receiving service content description information fed back by the central server in response to the content updating request; the service content description information comprises a priority score of each service content identification; determining a target service content identifier according to the priority score of each service content identifier; and downloading the service content corresponding to the target service content identification so as to update the service content resource in the content distribution node. And updating the service content resources in the content distribution node according to the priority level number, so that the content distribution node can provide the required service content for the client, and the utilization rate of the network resources of the content distribution node is improved.

Description

Service content update method and device, storage medium and electronic device

technical field

The present invention relates to the technical field of data processing, and in particular, to a service content update method and device, a storage medium and an electronic device.

Background technique

With the rapid development of communication networks, the realization of resource sharing has become more convenient and faster. For example, in the content distribution network, the client's video resources and other service content can be obtained in the corresponding central server, and can also be obtained in other content distribution nodes. , that is, when the client obtains video resources from the server, the server determines the content distribution node that shares resources with the client according to the IP address of the client. In order to improve the efficiency of resource sharing, it is usually necessary to update the service content resources in the content distribution node.

In the prior art, the central server usually calculates the content that the node needs to serve, and then forces the node to update the content to provide the service. This method only focuses on the global service content requirements, and cannot target the specific service content requirements of each content distribution node. , which may easily lead to low utilization of network resources of some nodes.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a service content update method, which can improve the utilization rate of network resources.

The present invention also provides a service content update device to ensure the actual realization and application of the above method.

A service content update method, comprising:

During the running process of the preset content distribution node, detecting the running state of the content distribution node;

Sending a content update request to a preset central server when it is detected that the running state of the content distribution node satisfies a preset content update condition;

Receive the service content description information fed back by the central server in response to the content update request; the service content description information includes a plurality of service content identifiers and a priority score of each of the service content identifiers; each of the service content The priority score of the identifier is calculated based on the number of visits of the service content identifier and the number of access failures, and the number of access failures is the preset number of failures of the client requesting to access the service content corresponding to the service content identifier;

According to the priority score of each service content identifier in the service content description information, determine the target service content identifier in each of the service content identifiers;

The service content corresponding to the target service content identifier is downloaded to update the service content resource in the content distribution node.

In the above method, optionally, the operating state includes a bandwidth contribution rate and a disk load parameter, and the process of detecting that the operating state of the content distribution node satisfies a preset content update condition includes:

If the bandwidth contribution rate of the content distribution node is less than the preset contribution rate threshold, or the disk load parameter is greater than the preset disk load threshold, it is determined that the running state of the content distribution node satisfies the preset content update condition, The bandwidth contribution rate of the content distribution node refers to the proportion of the bandwidth provided by the content distribution node to the upper limit of the theoretical bandwidth of the content distribution node, and the disk load parameter represents the busyness of the disk of the content distribution node.

In the above method, optionally, after detecting that the running state of the content distribution node satisfies a preset content update condition, the method further includes:

Detecting whether the disk capacity in the content distribution node is less than a preset capacity threshold;

When the disk capacity is less than the capacity threshold, select a service to be eliminated from each of the service contents according to the number of visits of each service content stored in the content distribution node within a preset service duration content;

Delete the service content to be eliminated.

In the above method, optionally, determining a target service content identifier in each of the service content identifiers according to the priority score of each service content identifier in the service content description information, including:

An alternative service content identifier is determined from each of the service content identifiers in the service content description information, where the alternative service content identifier refers to the service content corresponding to the service content currently stored by the content distribution node Identification of inconsistent identification;

According to the priority score of each candidate service content identifier in descending order, a preset number of target service content identifiers are selected from each of the candidate service content identifiers.

The above method, optionally, after the updating of the service content resources in the content distribution node, further includes:

Send the resource information of the service content resources in the content distribution node to the central server; the resource information includes the service content identifiers of each service content in the content distribution node; so that the central server receives the client When querying the service content matching the resource information, send the node information of the content distribution node to the client;

When receiving a service content query request sent by the client according to the node information provided by the central server, determine the service content corresponding to the service content query request;

The service content corresponding to the service content query request is sent to the client.

A service content update device, comprising:

a detection unit, configured to detect the running state of the content distribution node during a preset running process of the content distribution node;

a sending unit, configured to send a content update request to a preset central server when it is detected that the running state of the content distribution node satisfies a preset content update condition;

a receiving unit, configured to receive the service content description information fed back by the central server in response to the content update request; the service content description information includes a plurality of service content identifiers and a priority score of each of the service content identifiers; each The priority score of the service content identifier is calculated based on the number of accesses of the service content identifier and the number of access failures, where the number of access failures is a preset failure of the client to request access to the service content corresponding to the service content identifier frequency;

a determining unit, configured to determine a target service content identifier in each of the service content identifiers according to the priority score of each service content identifier in the service content description information;

An update unit, configured to download the service content corresponding to the target service content identifier, so as to update the service content resource in the content distribution node.

The above-mentioned device, optionally, the determining unit includes:

A determination subunit, configured to determine an alternative service content identifier in each of the service content identifiers in the service content description information, where the alternative service content identifier refers to the service currently stored with the content distribution node The identification of the service content corresponding to the content is inconsistent;

A selection subunit, configured to select a preset number of target service content identifiers from each of the candidate service content identifiers in descending order of the priority score of each of the candidate service content identifiers.

The above-mentioned device, optionally, also includes:

a first execution unit, configured to send resource information of service content resources in the content distribution node to the central server; the resource information includes service content identifiers of each service content in the content distribution node; The central server sends the node information of the content distribution node to the client when receiving the query from the client for service content that matches the resource information;

The second execution unit is configured to, when receiving a service content query request sent by the client according to the node information provided by the central server, determine the service content corresponding to the service content query request;

The third execution unit is configured to send the service content corresponding to the service content query request to the client.

A storage medium, the storage medium comprising a storage instruction, wherein when the instruction is executed, a device where the storage medium is located is controlled to execute the above-mentioned method for updating service content.

An electronic device includes a memory, and one or more instructions, wherein the one or more instructions are stored in the memory and configured to perform, by one or more processors, the service content update method as described above.

A service content update method and device, storage medium and electronic device are provided based on the above-mentioned implementation of the present invention, the method includes: during the preset operation process of the content distribution node, detecting the running state of the content distribution node; When the running state of the content distribution node satisfies preset content update conditions, send a content update request to a preset central server; receive service content description information fed back by the central server in response to the content update request; The service content description information includes a plurality of service content identifiers and a priority score of each service content identifier; the priority score of each service content identifier is calculated based on the number of visits and the number of access failures of the service content identifier , the number of access failures is the preset number of failures of the client requesting to access the service content corresponding to the service content identifier; according to the priority score of each service content identifier in the service content description information, in each of the The target service content identifier is determined in the service content identifier; the service content corresponding to the target service content identifier is downloaded to update the service content resource in the content distribution node. By applying the method provided by the embodiment of the present invention, the service content resources in the content distribution node can be updated according to the priority score, so that the content distribution node can provide the client with the required service content, and the utilization of the network resources of the content distribution node is improved. Rate.

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 It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

Fig. 1 is a method flow chart of a service content updating method provided by the present invention;

2 is a flowchart of a process for determining a target service content identification map in each service content identification provided by the present invention;

Fig. 3 is a method flow chart of another service content updating method provided by the present invention;

FIG. 4 is an exemplary diagram of an implementation scenario provided by the present invention;

FIG. 5 is an exemplary flowchart of a service content update method provided by the present invention;

6 is a schematic structural diagram of a service content updating apparatus provided by the present invention;

FIG. 7 is a schematic structural diagram of an electronic device provided by 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.

In this application, 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 comprising a list of elements includes not only those elements, but also no Other elements expressly listed, or which are also 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.

An embodiment of the present invention provides a method for updating service content, and the method can be applied to an electronic device. The method flowchart of the method is shown in FIG. 1 , and specifically includes:

S101: During a preset running process of the content distribution node, detect the running state of the content distribution node.

In this embodiment, the content distribution node may be a node of an end-to-end content distribution network PCDN, for example, may be various types of Internet devices such as set-top boxes and optical modems. In some embodiments, the content distribution node may also be a node of a content distribution network CDN (Content Delivery Network).

Optionally, the running state of the content distribution node may include one or more of a bandwidth contribution rate, a disk load parameter, and a data packet retransmission rate, and the disk load parameter may specifically be a disk I/O parameter.

S102: Send a content update request to a preset central server when it is detected that the running state of the content distribution node satisfies a preset content update condition.

In this embodiment, the running state of the content distribution node may include a bandwidth contribution rate and a disk load parameter, and the content update condition may be that the bandwidth contribution rate in the running state is less than a preset contribution rate threshold and/or the disk load parameter is greater than a preset value The parameter threshold of the content distribution node, etc.; the disk load parameter of the content distribution node can represent the disk busyness of the content distribution node; the bandwidth contribution rate of the content distribution node refers to the ratio of the bandwidth provided by the content distribution node to the theoretical upper limit of the content distribution node. If the broadband contribution rate is less than the contribution rate threshold, it means that the service content distribution of the content distribution node is unreasonable, and the service content in the content distribution node can be updated.

Specifically, the process of detecting that the running state of the content distribution node satisfies the preset content update condition may be: if the bandwidth contribution rate of the content distribution node is less than a preset contribution rate threshold, or the disk load parameter is greater than a preset The disk load threshold is determined, then it is determined that the running state of the content distribution node satisfies the preset content update condition.

Optionally, if the bandwidth contribution rate of the content distribution node is not less than a preset contribution rate threshold, and the disk load parameter is not greater than the preset disk load threshold, it is determined that the running status of the content distribution node does not meet the requirements. Preset content update conditions.

It should be noted that the bandwidth contribution rate threshold and disk load threshold can change with the current time period, and the content distribution node can set different bandwidth contribution rate thresholds and disk load for different time periods according to different business needs of each time period. The threshold value can improve the content update efficiency of the content distribution node and save the computing resources of the content distribution node.

Optionally, the content update request is used to instruct the central server Tracker to feed back service content description information, and the central server records the correspondence between different nodes and different service contents.

S103: Receive service content description information fed back by the central server in response to the content update request; the service content description information includes a plurality of service content identifiers and a priority score of each service content identifier; each of the service content identifiers The priority score of the service content identifier is calculated based on the number of visits of the service content identifier and the number of access failures, where the number of access failures is a preset number of failures of the client requesting to access the service content corresponding to the service content identifier.

In this embodiment, the service content description information may be a list to be diffused generated by the central server, the service content identifier in the service content description information is the identifier of the service content to be diffused, and the number of visits of the service content identifier refers to a preset time period The number of times the internal client requests the service content identified by the service content; the service content can be various types of resources, for example, video, music, etc.

In some embodiments, the priority score of the service content identification may reflect the priority diffusion degree of the service content identification. The higher the priority score of the service content identification, the higher the diffusion priority of the service content identification. The calculation method of the priority score as follows:

P=c×M+Q

Among them, P is the priority score; c is the preset conversion ratio; M is the number of access failures; Q is the number of accesses within the preset time period.

S104: Determine a target service content identifier in each of the service content identifiers according to the priority score of each service content identifier in the service content description information.

In this embodiment, the target service content identifier may be determined from each service content identifier according to the size of the priority score of each service content identifier.

S105: Download the service content corresponding to the target service content identifier to update the service content resource in the content distribution node.

In this embodiment, a query request may be sent to the central server to determine the node storing the service content identified by the target service content; The service content corresponding to the target service content identifier is downloaded in the server, and the downloaded service content is stored in the service content storage area in the content distribution node, so as to realize the update of the service content resource in the content distribution node.

Optionally, after the service content resource in the content distribution node is updated, S101 may be performed again until the running state of the content distribution node does not satisfy the content update condition.

By applying the method provided by the embodiment of the present invention, the service content resources in the content distribution node can be updated according to the priority score, so that the content distribution node can provide the client with the required service content, and the utilization of the network resources of the content distribution node is improved. Rate.

In an embodiment provided by the present invention, based on the foregoing implementation process, optionally, after detecting that the running state of the content distribution node satisfies a preset content update condition, the method further includes:

Detecting whether the disk capacity in the content distribution node is less than a preset capacity threshold;

When the disk capacity is less than the capacity threshold, select a service to be eliminated from each of the service contents according to the number of visits of each service content stored in the content distribution node within a preset service duration content;

Delete the service content to be eliminated.

In this embodiment, the service duration refers to the online service duration of the service content on the content distribution node. For example, the number of visits of each service content that has been online for more than one day in the past day can be counted, and the number of visits can vary from small to The preset number of service contents to be eliminated is selected in a large order as the service contents to be eliminated, and the service contents to be eliminated are deleted.

In an embodiment provided by the present invention, based on the above implementation process, optionally, according to the priority score of each service content identifier in the service content description information, determine in each of the service content identifiers The target service content identification, as shown in Figure 2, includes:

S201: Determine an alternative service content identifier in each of the service content identifiers in the service content description information, where the alternative service content identifier refers to a service content corresponding to the service content currently stored by the content distribution node Service Content ID inconsistent ID.

In this embodiment, each service content identifier in the service content description information may be compared with the service content identifier corresponding to the service content currently stored by the content distribution node, so as to determine in each service content identifier in the service content description information Select an alternative service content identifier.

S202: Select a preset number of target service content identifiers from each of the candidate service content identifiers in descending order of the priority scores of each of the candidate service content identifiers.

In this embodiment, one or more target service content identifiers may be selected from each candidate service content identifier.

In some embodiments, after the alternative service content identifiers are determined, the alternative service content identifiers whose priority scores are greater than the preset priority score threshold may be determined as the target service content identifiers.

Referring to FIG. 3, it is a method flowchart of another service content update method provided by an embodiment of the present invention, which specifically includes:

S301: During a preset running process of the content distribution node, detect the running state of the content distribution node.

S302: Send a content update request to a preset central server when it is detected that the running state of the content distribution node satisfies a preset content update condition.

S303: Receive service content description information fed back by the central server in response to the content update request; the service content description information includes a plurality of service content identifiers and a priority score of each service content identifier; each of the service content identifiers The priority score of the service content identifier is calculated based on the number of visits of the service content identifier and the number of access failures, where the number of access failures is a preset number of failures of the client requesting to access the service content corresponding to the service content identifier.

S304: Determine a target service content identifier in each of the service content identifiers according to the priority score of each service content identifier in the service content description information.

S305: Download the service content corresponding to the target service content identifier to update the service content resource in the content distribution node.

In this embodiment, the implementation process and principles of S301-S305 are the same as those of S101-S105 in the embodiment of FIG. 1 , and details are not repeated here.

S306: Send the resource information of the service content resources in the content distribution node to the central server; the resource information includes the service content identifiers of each service content in the content distribution node; When the client queries the service content matching the resource information, the client sends the node information of the content distribution node to the client.

In the example of the present invention, after the resource information is sent to the central server, the central server may record the correspondence between the content distribution node and each service content identifier in the resource information.

S307: When receiving a service content query request sent by the client according to the node information provided by the central server, determine the service content corresponding to the service content query request.

In the embodiment of the present invention, the service content query request may be parsed to obtain the service content identifier included in the service content query request, so as to determine the service content corresponding to the service content query request through the service content identifier.

S308: Send the service content corresponding to the service content query request to the client.

By applying the method provided by the embodiment of the present invention, the client can quickly provide the service content required by the client.

Referring to FIG. 4, it is an example diagram of an implementation environment provided by the present invention, and the implementation environment may include a central server Tracker, at least one PCDN node and at least one client. Both the PCDN node and the client node are connected to the Tracker.

Among them, PCDN nodes can provide a small amount of storage space and network bandwidth services for various types of set-top boxes, optical cats and other Internet devices. Each client can obtain information from PCDN nodes as well as other clients. The Tracker service maintains the correspondence between different PCDN nodes and service content. All PCDN nodes are connected to the Tracker. When all nodes need to pull content, they need to find the node where the content is located in the Tracker, and then initiate a connection to the corresponding node.

In this embodiment, the tracker needs to increase the number of failed misses and access the hot statistics function. When a client needs to request a certain piece of data, but the tracker is not found, the tracker will record the ID of the content of the piece. The PCDN node monitors the state of the local machine at all times, and will not make any changes when the operating state of the local machine is within the normal operating range (bandwidth for external services, disk IO status, packet retransmission rate, etc.). When the running state of the local machine deviates from the normal operating range, for example, the bandwidth provided is too low, and the disk IO is too high, content updates will be triggered.

The PCDN node finds that its own bandwidth contribution is lower than the predetermined threshold, and will start the local content update process, which mainly includes two aspects: update and elimination.

As shown in FIG. 5 , it is an exemplary flowchart of a method for updating service content provided by an embodiment of the present invention. Specifically, a request for a content diffusion list may be sent to the Tracker. After the tracker receives the node content update request, it counts the tasks of the recent Miss and the tasks with the highest access frequency from the local records, and converts the number of Misses into fractions and sorts them according to the configuration.

For example, if the data of segment a has been requested 10 times and missed 10 times in the last 5 minutes, and the configured conversion ratio is 10, the score of segment a data is 10*10miss+10 requests=110 points.

Each segment data may be sorted according to the score of each segment data, and the service content identifiers of the plurality of segment data are selected according to the order of the scores from high to low to form a diffusion list.

After the PCDN node obtains the diffusion list, it selects the required data fragments from the list to download according to its own resources. The selection method is generally to first eliminate the resources owned by itself, give priority to downloading the clips related to the local content, and give priority to downloading the clips with high scores, etc. Specifically, it can be downloaded from other nodes that store the content from the Tracker or downloaded from the CDN node.

After the download is complete, the Tracker is notified of its own resources in order to provide resource sharing services. After the new content is downloaded, the content distribution node can eliminate the old content according to the status of the disk. If the disk capacity is insufficient, it will select the resources with low access from the content of the node to delete it, and report it to the Tracker after completion.

Corresponding to the method described in FIG. 1 , an embodiment of the present invention further provides a service content update apparatus, which is used for the specific implementation of the method in FIG. 1 . The service content update apparatus provided by the embodiment of the present invention can be applied to electronic equipment. , the schematic diagram of its structure is shown in Figure 6, which specifically includes:

A detection unit 601, configured to detect the running state of the content distribution node during a preset running process of the content distribution node;

A sending unit 602, configured to send a content update request to a preset central server when it is detected that the running state of the content distribution node satisfies a preset content update condition;

A receiving unit 603, configured to receive the service content description information fed back by the central server in response to the content update request; the service content description information includes a plurality of service content identifiers and a priority score of each of the service content identifiers; The priority score of each service content identifier is calculated based on the number of visits of the service content identifier and the number of access failures, where the number of access failures is a preset number of times the client requests to access the service content corresponding to the service content identifier. number of failures;

A determining unit 604, configured to determine a target service content identifier in each of the service content identifiers according to the priority score of each service content identifier in the service content description information;

The updating unit 605 is configured to download the service content corresponding to the target service content identifier, so as to update the service content resource in the content distribution node.

In an embodiment provided by the present invention, based on the above solution, optionally, the determining unit 604 includes:

A determination subunit, configured to determine an alternative service content identifier in each of the service content identifiers in the service content description information, where the alternative service content identifier refers to the service currently stored with the content distribution node The identification of the service content corresponding to the content is inconsistent;

A selection subunit, configured to select a preset number of target service content identifiers from each of the candidate service content identifiers in descending order of the priority score of each of the candidate service content identifiers.

In an embodiment provided by the present invention, based on the above solution, optionally, it also includes:

a first execution unit, configured to send resource information of service content resources in the content distribution node to the central server; the resource information includes service content identifiers of each service content in the content distribution node; The central server sends the node information of the content distribution node to the client when receiving the query from the client for service content that matches the resource information;

The second execution unit is configured to, when receiving a service content query request sent by the client according to the node information provided by the central server, determine the service content corresponding to the service content query request;

The third execution unit is configured to send the service content corresponding to the service content query request to the client.

The specific principles and execution processes of each unit and module in the service content update apparatus disclosed in the above embodiments of the present invention are the same as the service content update methods disclosed in the above embodiments of the present invention. For details, please refer to the service content update provided by the above embodiments of the present invention. The corresponding part in the method will not be repeated here.

An embodiment of the present invention further provides a storage medium, where the storage medium includes stored instructions, wherein when the instructions are executed, a device on which the storage medium is located is controlled to execute the foregoing method for updating service content.

An embodiment of the present invention further provides an electronic device, the schematic structural diagram of which is shown in FIG. 7 , and specifically includes a memory 701 and one or more instructions 702 , wherein one or more instructions 702 are stored in the memory 701 and are processed through the memory 701 . The one or more instructions 702 are configured to be executed by one or more processors 703 to:

During the running process of the preset content distribution node, detecting the running state of the content distribution node;

Sending a content update request to a preset central server when it is detected that the running state of the content distribution node satisfies a preset content update condition;

Receive the service content description information fed back by the central server in response to the content update request; the service content description information includes a plurality of service content identifiers and a priority score of each of the service content identifiers; each of the service content The priority score of the identifier is calculated based on the number of visits of the service content identifier and the number of access failures, and the number of access failures is the preset number of failures of the client requesting to access the service content corresponding to the service content identifier;

According to the priority score of each service content identifier in the service content description information, determine the target service content identifier in each of the service content identifiers;

The service content corresponding to the target service content identifier is downloaded to update the service content resource in the content distribution node.

It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. For the same and similar parts among the various embodiments, refer to each other Can. As for the apparatus type embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for the relevant part, please refer to the partial description of the method embodiment.

Finally, it should also be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply these entities or that there is any such actual relationship or sequence between operations. 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.

For the convenience of description, when describing the above device, the functions are divided into various units and described respectively. Of course, when implementing the present invention, the functions of each unit may be implemented in one or more software and/or hardware.

From the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art. The computer software products can be stored in storage media, such as ROM/RAM, magnetic disks, etc. , CD, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of the present invention.

A method for updating service content provided by the present invention has been described in detail above. Specific examples are used to illustrate the principles and implementations of the present invention. Its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. limit.

Claims (10)

1. a service content update method, is characterized in that, comprises: During the running process of the preset content distribution node, detecting the running state of the content distribution node; Sending a content update request to a preset central server when it is detected that the running state of the content distribution node satisfies a preset content update condition; Receive the service content description information fed back by the central server in response to the content update request; the service content description information includes a plurality of service content identifiers and a priority score of each of the service content identifiers; each of the service content The priority score of the identifier is calculated based on the number of visits of the service content identifier and the number of access failures, and the number of access failures is the preset number of failures of the client requesting to access the service content corresponding to the service content identifier; According to the priority score of each service content identifier in the service content description information, determine the target service content identifier in each of the service content identifiers; The service content corresponding to the target service content identifier is downloaded to update the service content resource in the content distribution node. 2. The method according to claim 1, wherein the operating state comprises a bandwidth contribution rate and a disk load parameter, and the process of detecting that the operating state of the content distribution node satisfies a preset content update condition comprises: If the bandwidth contribution rate of the content distribution node is less than the preset contribution rate threshold, or the disk load parameter is greater than the preset disk load threshold, it is determined that the running state of the content distribution node satisfies the preset content update condition, The bandwidth contribution rate of the content distribution node refers to the proportion of the bandwidth provided by the content distribution node to the upper limit of the theoretical bandwidth of the content distribution node, and the disk load parameter represents the busyness of the disk of the content distribution node. 3. The method according to claim 1 or 2, wherein after detecting that the running state of the content distribution node satisfies a preset content update condition, the method further comprises: Detecting whether the disk capacity in the content distribution node is less than a preset capacity threshold; When the disk capacity is less than the capacity threshold, select a service to be eliminated from each of the service contents according to the number of visits of each service content stored in the content distribution node within a preset service duration content; Delete the service content to be eliminated. 4. The method according to claim 1, wherein the target service content identifier is determined in each of the service content identifiers according to the priority score of each service content identifier in the service content description information ,include: An alternative service content identifier is determined from each of the service content identifiers in the service content description information, where the alternative service content identifier refers to the service content corresponding to the service content currently stored by the content distribution node Identification of inconsistent identification; According to the priority score of each candidate service content identifier in descending order, a preset number of target service content identifiers are selected from each of the candidate service content identifiers. 5. The method according to claim 1, wherein after updating the service content resources in the content distribution node, the method further comprises: Send the resource information of the service content resources in the content distribution node to the central server; the resource information includes the service content identifiers of each service content in the content distribution node; so that the central server receives the client When querying the service content matching the resource information, send the node information of the content distribution node to the client; When receiving a service content query request sent by the client according to the node information provided by the central server, determine the service content corresponding to the service content query request; The service content corresponding to the service content query request is sent to the client. 6. A device for updating service content, comprising: a detection unit, configured to detect the running state of the content distribution node during a preset running process of the content distribution node; a sending unit, configured to send a content update request to a preset central server when it is detected that the running state of the content distribution node satisfies a preset content update condition; a receiving unit, configured to receive the service content description information fed back by the central server in response to the content update request; the service content description information includes a plurality of service content identifiers and a priority score of each of the service content identifiers; each The priority score of the service content identifier is calculated based on the number of accesses of the service content identifier and the number of access failures, where the number of access failures is a preset failure of the client to request access to the service content corresponding to the service content identifier frequency; a determining unit, configured to determine a target service content identifier in each of the service content identifiers according to the priority score of each service content identifier in the service content description information; An update unit, configured to download the service content corresponding to the target service content identifier, so as to update the service content resource in the content distribution node. 7. The apparatus according to claim 6, wherein the determining unit comprises: A determination subunit, configured to determine an alternative service content identifier in each of the service content identifiers in the service content description information, where the alternative service content identifier refers to the service currently stored with the content distribution node The identification of the service content corresponding to the content is inconsistent; A selection subunit, configured to select a preset number of target service content identifiers from each of the candidate service content identifiers in descending order of the priority score of each of the candidate service content identifiers. 8. The apparatus of claim 6, further comprising: a first execution unit, configured to send resource information of service content resources in the content distribution node to the central server; the resource information includes service content identifiers of each service content in the content distribution node; The central server sends the node information of the content distribution node to the client when receiving the query from the client for service content that matches the resource information; The second execution unit is configured to, when receiving a service content query request sent by the client according to the node information provided by the central server, determine the service content corresponding to the service content query request; The third execution unit is configured to send the service content corresponding to the service content query request to the client. 9 . A storage medium, characterized in that the storage medium comprises a storage instruction, wherein when the instruction is executed, a device where the storage medium is located is controlled to execute the service content according to any one of claims 1 to 5 Update method. 10. An electronic device, comprising a memory, and one or more instructions, wherein the one or more instructions are stored in the memory and configured to be executed by one or more processors as claimed in claims 1- 5. The service content update method according to any one of the items.

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