CN116389773A

CN116389773A - Content resource acquisition method, device and storage medium based on content distribution network

Info

Publication number: CN116389773A
Application number: CN202310164706.0A
Authority: CN
Inventors: 杨怀志
Original assignee: Alibaba China Co Ltd
Current assignee: Alibaba China Co Ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-07-04

Abstract

The embodiment of the application provides a content resource acquisition method, equipment and storage medium based on a content distribution network. In the embodiment of the application, when the resource demand end requests to acquire the content resource from any edge node, the edge node does not acquire the content resource directly and returns the content resource to the resource demand end, but schedules a proper edge node to acquire the content resource and returns the content resource to the resource demand end according to different access heat levels of the content resource, so that the probability of successfully acquiring the content resource by the edge node is improved, the access hit rate of the edge node is greatly increased, the frequency of accessing an upper node is reduced, the bandwidth cost of a content distribution network is effectively controlled, and the service cost of the content distribution network is effectively reduced. In addition, content resources in the resource demand end are not required to be acquired by the edge nodes, so that the transformation cost of the resource demand end is reduced.

Description

Content resource acquisition method, device and storage medium based on content distribution network

Technical Field

The present disclosure relates to the field of computer technologies, and in particular, to a method, an apparatus, and a storage medium for obtaining a content resource based on a content distribution network.

Background

The content distribution network (Content Delivery Network, CDN for short) distributes the content resources of the source station to the edge nodes of each place, and the user can obtain the required content resources nearby by means of the edge nodes distributed in each place, so that network congestion is reduced, and the response speed and hit rate of user access are improved.

In practical applications, when the edge node does not cache the content resource requested by the user, the edge node accesses the upper node at the upper layer to acquire the content resource requested by the user, and sometimes even the upper node needs to return to the source station to acquire the content resource requested by the user. And access to the upper node brings about an increase in bandwidth cost, which affects the service cost of the content distribution network.

Disclosure of Invention

Aspects of the present application provide a content resource acquisition method, apparatus, and storage medium based on a content distribution network, so as to effectively control bandwidth cost of the content distribution network and effectively reduce service cost of the content distribution network.

The embodiment of the application provides a content resource obtaining method based on a content distribution network, which is used for responding to an access strategy obtaining request sent by a first edge node when a resource demand end requests to obtain a target content resource, and determining the access heat level of the target content resource; generating an access policy according to the access heat level of the target content resource, wherein the access policy is used for indicating that the target content resource is acquired through the first edge node or the second edge node; and returning an access strategy to the first edge node so that the first edge node acquires the target content resource and returns the target content resource to the resource demand end, or informing the resource demand end to acquire the target content resource through the second edge node by the first edge node.

The embodiment of the application also provides a content resource acquisition method based on the content distribution network, which responds to a first access request for acquiring target content resources sent by a resource demand end and sends an access strategy acquisition request; receiving an access policy returned in response to the access policy acquisition request, wherein the access policy is used for indicating that the target content resource is acquired through the first edge node or the second edge node; and acquiring the target content resource according to the access strategy and returning the target content resource to the resource demand end, or informing the resource demand end to acquire the target content resource through the second edge node.

The embodiment of the application also provides a content resource obtaining method based on the content distribution network, which is used for sending a first access request to a first single-wire edge node, wherein the first access request is used for requesting to obtain target content resources; receiving a target content resource returned by the first single-line edge node; or, receiving the IP address of the second single-wire edge node returned by the first single-wire edge node; sending a second access request to the second single-wire edge node according to the IP address of the second single-wire edge node, wherein the second access request is used for requesting to acquire target content resources; receiving a target content resource returned by the second single-line edge node; or, receiving the IP address of the first multi-line edge node returned by the first single-line edge node; sending a third access request to the first multi-line edge node according to the IP address of the first multi-line edge node, wherein the third access request is used for requesting to acquire target content resources; and receiving a target content resource returned by the first multi-line edge node.

The embodiment of the application also provides electronic equipment, which comprises: a memory and a processor; a memory for storing a computer program; the processor is coupled to the memory for executing the computer program for performing the steps in the content resource acquisition method based on the content distribution network.

The embodiments also provide a computer readable storage medium storing a computer program which, when executed by a processor, causes the processor to enable steps in a content resource acquisition method based on a content distribution network.

In the embodiment of the application, when the resource demand end requests to acquire the content resource from any edge node, the edge node does not acquire the content resource directly and returns the content resource to the resource demand end, but schedules a proper edge node to acquire the content resource and returns the content resource to the resource demand end according to different access heat levels of the content resource, so that the probability of successfully acquiring the content resource by the edge node is improved, the access hit rate of the edge node is greatly increased, the frequency of accessing an upper node is reduced, the bandwidth cost of a content distribution network is effectively controlled, and the service cost of the content distribution network is effectively reduced. In addition, content resources in the resource demand end are not required to be acquired by the edge nodes, so that the transformation cost of the resource demand end is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is an exemplary application scenario diagram provided in an embodiment of the present application;

fig. 2 is a flowchart of a method for obtaining a content resource based on a content distribution network according to an embodiment of the present application;

fig. 3 is a flowchart of another method for obtaining content resources based on a content distribution network according to an embodiment of the present application;

fig. 4 is a signaling interaction diagram of a content resource obtaining method based on a content distribution network according to an embodiment of the present application;

fig. 5 is a flowchart of another method for obtaining content resources based on a content distribution network according to an embodiment of the present application;

fig. 6 is a flowchart of another method for obtaining content resources based on a content distribution network according to an embodiment of the present application;

fig. 7 is a flowchart of another method for obtaining content resources based on a content distribution network according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a content resource access device according to an embodiment of the present application;

Fig. 9 is a schematic structural diagram of another content resource access device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or" describes the access relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may represent: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. In the text description of the present application, the character "/" generally indicates that the front-rear association object is an or relationship. In addition, in the embodiments of the present application, "first", "second", "third", etc. are only for distinguishing the contents of different objects, and have no other special meaning.

It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are information and data authorized by the user or fully authorized by each party, and the collection, use and processing of the related data need to comply with the related laws and regulations and standards of the related country and region, and provide corresponding operation entries for the user to select authorization or rejection.

To this end, embodiments of the present application provide a method, an apparatus, and a storage medium for obtaining a content resource based on a content distribution network. In the embodiment of the application, when the resource demand end requests to acquire the content resource from any edge node, the edge node does not acquire the content resource directly and returns the content resource to the resource demand end, but schedules a proper edge node to acquire the content resource and returns the content resource to the resource demand end according to different access heat levels of the content resource, so that the probability of successfully acquiring the content resource by the edge node is improved, the access hit rate of the edge node is greatly increased, the frequency of accessing an upper node is reduced, the bandwidth cost of a content distribution network is effectively controlled, and the service cost of the content distribution network is effectively reduced. In addition, the resource demand end is not required to distinguish which edge nodes need to acquire the content resource, so that the transformation cost of the resource demand end is reduced.

Fig. 1 is an exemplary application scenario diagram provided in an embodiment of the present application. Referring to fig. 1, the content distribution network includes at least one single line edge node, which is an edge node that can access a single operator network, at least one multi-line edge node, which is an edge node that can access a plurality of operator networks, that is, the single line edge node and the multi-line edge node are divided by the number of the accessed operator networks, and at least one upper layer node. The single-wire edge node or the multi-wire edge node may access an upper node that may access the source station, and it is understood that the upper node is a node in the content distribution network that is between the edge node and the source station. Single-wire edge nodes, multi-wire edge nodes, or upper-layer nodes are cached from various content resources including, for example, but not limited to: video data, audio data, text data, image data, application installation packages, or data compression packages.

When the method is specifically applied, a resource demand end requests a domain name system (Domain Name System, DNS) to carry out domain name resolution, and an IP (Internet Protocol ) address of a single-line edge node to be accessed is obtained; and the resource demand end sends an access request for acquiring the content resource to the corresponding single-line edge node according to the IP address analyzed by the domain name system. For example, the resource demand end sends an access request for acquiring the content resource a to the single-wire edge node 1 according to the IP address of the single-wire edge node 1; the resource demand end sends an access request for acquiring the content resource b to the single-wire edge node 2 according to the IP address of the single-wire edge node 2; the resource demand end sends an access request for acquiring the content resource c to the single-wire edge node 3 according to the IP address of the single-wire edge node 3. When any single-wire edge node receives an access request for acquiring the content resource sent by the resource demand end, the single-wire edge node inquires the access strategy of the content resource required to be acquired from the dispatching center system. The scheduling center system determines the access heat level of each content resource based on the statistical result of the access times of each content resource; and setting corresponding access strategies for each content resource based on the access heat level of each content resource.

Illustratively, the first access heat level, the second access heat level, and the third access heat level are sequentially in order of the number of accesses from high to low. The access policy for the content resource belonging to the first access popularity level indicates that the content resource can be acquired locally by a single-wire edge node that receives the access request sent by the resource demand side. The access policy indication of the content resource belonging to the second access popularity level may be redirected to the designated single-wire edge node to obtain the content resource locally at the designated single-wire edge node by the designated single-wire edge node in response to the access request resent by the resource demand side. The access policy indication for the content resource belonging to the third access popularity level may be redirected to the designated multi-line edge node to obtain the content resource locally at the designated multi-line edge node by the designated multi-line edge node in response to the access request resent by the resource demand side.

For example, the content resource c belongs to a first access heat level, that is, the access heat of the content resource c is highest, and when the resource demand end sends an access request for obtaining the content resource c to the single-wire edge node 3, the access link of the content resource c is: single line edge node 3-upper layer node 1-source station. Firstly, the single-wire edge node 3 locally acquires the content resource c, and the single-wire edge node 3 may acquire the content resource c successfully or may fail to acquire the content resource c; if the single-wire edge node 3 locally stores the content resource c, the single-wire edge node 3 can successfully acquire the content resource c locally, and the single-wire edge node 3 returns the content resource c to the resource demand end. If the single-wire edge node 3 does not locally store the content resource c, the single-wire edge node 3 fails to locally acquire the content resource c, and the single-wire edge node 3 sends an access request for acquiring the content resource c to the upper node 1 through the public network, and the upper node 1 acquires the content resource c. If the upper node 1 successfully acquires the content resource c locally, the upper node 1 returns the content resource c to the resource demand end through the single-line edge node 3. If the upper node 1 fails to acquire the content resource c locally, the upper node 1 returns a source to the source station for the content resource c. The content resource c returned by the source station is sent to the resource demand end through the upper node 1 and the single line edge node 3.

The content resource a belongs to the second access heat level, namely the access heat of the content resource a is next highest, and when the resource demand end sends an access request for acquiring the content resource a to the single-wire edge node 1, the access link of the content resource a is as follows: single line edge node 1-single line edge node 3-upper layer node 2-source station. Firstly, when a resource demand end sends an access request for acquiring a content resource a to a single-wire edge node 1, the single-wire edge node 1 returns an ip address of a single-wire edge node 3 to the resource demand end, so that the resource demand end initiates the access request for acquiring the content resource a to the single-wire edge node 3 according to the ip address of the single-wire edge node 3. If the single-wire edge node 3 successfully acquires the content resource a locally, the single-wire edge node 3 returns the content resource a to the resource demand end. If the single-wire edge node 3 fails to acquire the content resource a locally, the single-wire edge node 3 sends an access request for acquiring the content resource a to the upper node 2 through a public network (i.e. an external network), and if the upper node 2 successfully acquires the content resource a locally, the upper node 2 returns the content resource a to a resource demand end through the single-wire edge node 3. If the upper node 2 fails to acquire the content resource a locally, the upper node 2 returns a source to the source station for the content resource a. The content resource a returned by the source station is sent to the resource demand end through the upper layer node 2 and the single line edge node 3. It should be noted that, in fig. 1, only the single-wire edge node 3 accesses an upper node through the public network as an example, in practical application, if there is an upper node that is in the same intranet as the single-wire edge node 3, the single-wire edge node 3 sends an access request for obtaining a content resource to the upper node through the intranet. The single-line edge node accesses the upper node through the intranet, and compared with the upper node accessed through the extranet, the bandwidth cost of the content distribution network can be greatly reduced.

The content resource b belongs to a third access heat level, namely the access heat of the content resource b is the lowest, and when the resource demand end sends an access request for acquiring the content resource b to the single-wire edge node 2, the access link of the content resource b is as follows: single line edge node 2-multi-line edge node 1-upper layer node 1-source station. Firstly, when a resource demand end sends an access request for acquiring a content resource b to a single-wire edge node 2, the single-wire edge node 2 returns an ip address of a multi-wire edge node 1 to the resource demand end so that the resource demand end initiates the access request for acquiring the content resource b to the multi-wire edge node 1 according to the ip address of the multi-wire edge node 1. The multi-line edge node 1 acquires the content resource b locally, and the multi-line edge node 1 may acquire the content resource b successfully or may fail to acquire the content resource b locally. If the multi-line edge node 1 stores the content resource b locally, the multi-line edge node 1 successfully acquires the content resource b locally, and the multi-line edge node 1 returns the content resource b to the resource demand end. If the multi-line edge node 1 does not locally store the content resource b, the multi-line edge node 1 fails to locally acquire the content resource b, the multi-line edge node 1 sends an access request for acquiring the content resource b to the upper node 1 through an intranet (i.e., a local area network), and if the upper node 1 successfully acquires the content resource b locally, the upper node 1 returns the content resource b to a resource demand end through the multi-line edge node 1. If the upper node 1 fails to acquire the content resource b locally, the upper node 1 returns a source to the source station for the content resource b. And the content resource b returned by the source station is sent to the resource demand end through the upper node 1 and the multi-line edge node 1. It should be noted that, in fig. 1, only the access of the multi-line edge node 1 to the upper node through the intranet is taken as an example, in practical application, if there is no upper node in the same intranet as the multi-line edge node 1, in order to ensure the reliability of obtaining the intranet resources, the multi-line edge node 1 also sends an access request for obtaining the content resources to the upper node through the external network. The multi-line edge node accesses the upper node through the intranet, and compared with the upper node accessed through the extranet, the bandwidth cost of the content distribution network can be greatly reduced.

In this embodiment, each node in the resource demand end, the dispatch center system, and the content distribution network may be a terminal device or a server. The terminal device or the server may be hardware or software. When the terminal device is hardware, the terminal device is, for example, a mobile phone, a tablet computer, a desktop computer, a wearable intelligent device, an intelligent home device, or the like. When the terminal device is software, it may be installed in the above-listed hardware device, and in this case, the terminal device is, for example, a plurality of software modules or a single software module, etc., the embodiment of the present application is not limited. The server may be hardware or software. When the server is hardware, the server is a single server or a distributed server cluster composed of a plurality of servers. When the server is software, it may be a plurality of software modules or a single software module, and the embodiment of the present application is not limited.

The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.

Fig. 2 is a flowchart of a content resource obtaining method based on a content distribution network according to an embodiment of the present application. Referring to fig. 2, the method may include the steps of:

201. And determining the access heat level of the target content resource in response to an access policy acquisition request sent by the first edge node when the resource demand end requests to acquire the target content resource.

202. And generating an access policy according to the access heat level of the target content resource, wherein the access policy is used for indicating that the target content resource is acquired through the first edge node or the second edge node.

203. And returning an access strategy to the first edge node so that the first edge node acquires the target content resource and returns the target content resource to the resource demand end, or informing the resource demand end to acquire the target content resource through the second edge node by the first edge node.

In this embodiment, the content distribution network includes one or more edge nodes, and all edge nodes in the content distribution network may be single-line edge nodes or multi-line edge nodes, or part of edge nodes in the content distribution network are single-line edge nodes and part of edge nodes are multi-line edge nodes, which is not limited.

In this embodiment, the resource demand end may request to obtain the content resource from any edge node in the content distribution network. For ease of distinction and understanding, the edge node requested by the resource-requiring end is referred to as a first edge node, and the content resource requested by the resource-requiring end to be acquired is referred to as a target content resource. Illustratively, the resource demand end extracts a domain name from a URL (Uniform Resource Locator ) of a content resource to be accessed, and uses a domain name system to resolve the extracted domain name to obtain an IP address of the first edge node. The resource demand end requests to acquire the target content resource from the first edge node according to a first access request which is sent to the first edge node by the IP address of the first edge node and is used for acquiring the target content resource.

When the resource demand end requests to acquire the target content resource from the first edge node, the first edge node does not directly acquire the target content resource locally and returns the target content resource to the resource demand end, but acquires the access strategy of the target content resource first, and acquires the target content resource according to the edge node indicated by the access strategy and returns the target content resource to the resource demand end. Specifically, when the resource demand end requests to acquire the target content resource, the first edge node may send an access policy acquisition request to the execution body responsible for the access policy generation task, so as to acquire the access policy of the target content resource from the execution body responsible for the access policy generation task. For ease of understanding and distinction, the execution entity responsible for the access policy generation task is referred to as a dispatch center system. The dispatching center system responds to an access strategy acquisition request sent by the first edge node when the resource demand end requests to acquire the target content resource, and determines the access heat level of the target content resource.

In this embodiment, the dispatch center system may determine the access popularity level of the target content resource in real time according to the access number of the target content resource. Further alternatively, in order to efficiently determine the access popularity level of the target content resource, the dispatch center system may determine, in real time or in advance, a correspondence between the content resource and the access popularity level. For ease of understanding and distinction, the correspondence between content resources and access heat levels is referred to as a first correspondence. Then, when the scheduling center system determines the access heat level of the target content resource, the first corresponding relation is queried, and the access heat level of the target content resource is obtained.

In practical application, the source station distributes any one of a plurality of content resources to each node in the content distribution network, and the corresponding access times are increased once when the access is increased once. The dispatching center system can determine the access times of the plurality of content resources in real time, at fixed time or periodically, and determine the access heat level of the plurality of content resources according to the access times of the plurality of content resources; and establishing a first corresponding relation between the content resource and the access heat level according to the access heat level of each of the plurality of content resources. Illustratively, the first access heat level, the second access heat level, and the third access heat level are sequentially in order of the access heat level from high to low. The access times corresponding to the first access heat level are larger than the first times; the access times corresponding to the second access heat level are more than the second times and less than or equal to the first times; the access times corresponding to the third access heat level are smaller than or equal to the second times; wherein the first number of times is greater than the second number of times.

In this embodiment, the dispatch center system generates an access policy according to the access heat level of the target content resource, where the access policy is used to instruct the target content resource to be acquired by the first edge node or the second edge node. The second edge node is a different edge node than the first edge node. And ordering the access heat level of the content resources which are allowed to be acquired from high to low, and sequentially arranging a first edge node and a second edge node. That is, the first edge node obtains the content resource with larger access heat, and the second edge node obtains the content resource with smaller access heat.

Specifically, if the access popularity level is higher, it indicates that the access frequency of the target content resource is more frequent (i.e. the access popularity is higher), the probability that most of the edge nodes in the content distribution network acquire the target content resource in the historical time period is higher, the probability that any edge node receiving the resource demand end request to acquire the target content resource successfully acquires the target content resource from the local is higher, at this time, the first edge node can be scheduled to acquire the target content resource with the higher access popularity level, and the access policy generated by the scheduling center system is used for indicating that the target content resource is acquired through the first edge node.

If the access heat level is higher, it indicates that the access frequency of the target content resource is less frequent (i.e. the access heat level is smaller), the probability that most edge nodes in the content distribution network acquire the target content resource in the historical time period is smaller, the probability that any edge node receiving the resource demand end request to acquire the target content resource successfully acquires the target content resource from the local is smaller, and at this time, a second edge node with a proper access heat level can be scheduled to acquire the target content resource with a lower access heat level. The access policy generated by the dispatch center system is used to indicate that the target content resource is acquired by the second edge node.

In this embodiment, the dispatch center system returns an access policy to the first edge node, and the access links of the target content resource are different with different access policies. Specifically, if the access policy indicates that the target content resource is acquired through the first edge node, the access link is the first edge node-upper node-source station. And if the first edge node successfully acquires the target content resource locally, returning the target content resource to the resource demand end by the first edge node. If the first edge node fails to acquire the target content resource locally, the first edge node requests the upper node to acquire the target content resource through the public network or the intranet. If the upper node obtains the target content resource locally, the target content resource passes through the upper node and the first edge node in sequence until being transmitted to the resource demand end. If the upper node fails to acquire the target content resource locally, the upper node returns a source to the source station to acquire the target content resource provided by the source station, and the target content resource provided by the source station sequentially passes through the source station, the upper node and the first edge node until being transmitted to the resource demand end. Notably, the first edge node is preferentially used for locally acquiring the target content resource, so that the frequency of accessing the upper node can be reduced, and the bandwidth cost is reduced. Even if the first edge node fails to acquire the target content resource locally, the first edge node can request to acquire the target content resource to an upper node or even a source station, so that the acquisition reliability of the content resource is improved.

If the access policy indicates that the target content resource is acquired through the second edge node, the first edge node sends the IP address of the second edge node to the resource demand end, and the resource demand end requests the second edge node to acquire the target content resource according to the IP address of the second edge node. Further optionally, in order to accurately instruct the resource demand end to acquire the content resource from the new edge node, the first edge node sends notification information for notifying the resource demand end to acquire the target content resource through the second edge node to the resource demand end, where the notification information includes an IP address of the second edge node, and the resource demand end requests to acquire the target content resource from the second edge node according to the IP address of the second edge node in the notification information.

The access link is a second edge node-upper node-source station for the case where the target content resource is acquired by the second edge node. And if the second edge node successfully acquires the target content resource locally, returning the target content resource to the resource demand end by the second edge node. If the second edge node fails to acquire the target content resource locally, the second edge node requests the upper node to acquire the target content resource through the public network or the intranet. If the upper node obtains the target content resource locally, the target content resource passes through the upper node and the second edge node in sequence until being transmitted to the resource demand end. If the upper node fails to acquire the target content resource locally, the upper node returns a source to the source station to acquire the target content resource provided by the source station, and the target content resource provided by the source station sequentially passes through the source station, the upper node and the second edge node until being transmitted to the resource demand end. Notably, the priority of obtaining the target content resource locally through the second edge node can reduce the frequency of accessing the upper node and reduce the bandwidth cost. Even if the second edge node fails to acquire the target content resource locally, the second edge node can request to acquire the target content resource to the upper node or even the source station, so that the acquisition reliability of the content resource is improved.

It should be noted that, when the edge node requests the upper node to obtain the target content resource, if there is an upper node in the same intranet (i.e. local area network) as the edge source node, the edge node requests the upper node to obtain the target content resource through the intranet. Compared with the access of the edge node to the upper node through the public network, the access of the edge node to the upper node through the internal network greatly reduces the bandwidth cost of the content distribution network.

According to the technical scheme provided by the embodiment of the application, when the resource demand end requests to acquire the content resource from any edge node, the edge node does not acquire the content resource directly and returns the content resource to the resource demand end, but schedules a proper edge node to acquire the content resource and returns the content resource to the resource demand end according to different access heat levels of the content resource, so that the probability that the edge node successfully acquires the content resource is improved, the access hit rate of the edge node is greatly increased, the frequency of accessing an upper node is reduced, the bandwidth cost of a content distribution network is effectively controlled, and the service cost of the content distribution network is effectively reduced. In addition, content resources in the resource demand end are not required to be acquired by the edge nodes, so that the transformation cost of the resource demand end is reduced.

Further optionally, in order to more effectively control the bandwidth cost of the content distribution network and more effectively reduce the service cost of the content distribution network, the resource demand end first requests to acquire the content resource from the single-wire edge node, and the dispatching center system determines a suitable single-wire edge node or multi-wire edge node according to the access heat level of the content resource, and acquires the content resource through the determined single-wire edge node or multi-wire edge node. The embodiment of the application also provides a content resource acquisition method based on the content distribution network aiming at the situation that the content distribution network comprises single-line edge nodes and multi-line edge nodes.

Fig. 3 is a flowchart of another method for obtaining content resources based on a content distribution network according to an embodiment of the present application. Referring to fig. 3, the method may include the steps of:

301. and determining the access heat level of the target content resource in response to an access policy acquisition request sent by the first single-wire edge node when the resource demand end requests to acquire the target content resource.

302. And generating an access policy according to the access heat level of the target content resource, wherein the access policy is used for indicating that the target content resource is acquired through a target edge node, and the target edge node is any one of a first single-line edge node, a second single-line edge node or a first multi-line edge node.

303. And returning an access strategy to the first single-wire edge node so that the first single-wire edge node acquires the target content resource and returns the target content resource to the resource demand end, or informing the resource demand end to acquire the target content resource through the second single-wire edge node or the first multi-wire edge node by the first single-wire edge node.

In this embodiment, the resource demand end may request to acquire the content resource from any single-line edge node in the content distribution network. For convenience of distinction and understanding, the single-wire edge node requested by the resource demand end is referred to as a first single-wire edge node, and the content resource requested to be acquired by the resource demand end is referred to as a target content resource. Illustratively, the resource demand end extracts a domain name from a URL (Uniform Resource Locator ) of a content resource to be accessed, and uses a domain name system to resolve the extracted domain name to obtain an IP address of the first single-wire edge node. And the resource demand end requests to acquire the target content resource from the first single-wire edge node according to a first access request which is sent to the first single-wire edge node by the IP address of the first single-wire edge node and is used for acquiring the target content resource.

When the resource demand end requests to acquire the target content resource from the first single-wire edge node, the first single-wire edge node does not directly acquire the target content resource locally and returns the target content resource to the resource demand end, but acquires the access strategy of the target content resource first, and acquires the target content resource according to the edge node indicated by the access strategy and returns the target content resource to the resource demand end. Specifically, when the resource demand end requests to acquire the target content resource, the first single-wire edge node may send an access policy acquisition request to the execution body responsible for the access policy generation task to acquire the access policy of the target content resource from the execution body responsible for the access policy generation task. For ease of understanding and distinction, the execution entity responsible for the access policy generation task is referred to as a dispatch center system. The scheduling center system responds to an access strategy acquisition request sent by the first single-wire edge node when the resource demand end requests to acquire the target content resource, and determines the access heat level of the target content resource.

In this embodiment, the access popularity level of the target content resource may be any one of the first access popularity level, the second access popularity level, and the third access popularity level. The access heat level is different, and the corresponding access policy is also different.

In this embodiment, the target edge node is one of a first single-line edge node, a second single-line edge node or a first multi-line edge node, and the access heat levels of the content resources allowed to be acquired by different target edge nodes are different, and are sequentially the first single-line edge node, the second single-line edge node and the first multi-line edge node according to the order of the access heat levels of the content resources allowed to be acquired from high to low. That is, the first single-wire edge node may obtain the content resource with the highest heat, the second single-wire edge node may obtain the content resource with the second highest heat, and the first multi-wire edge node may obtain the content resource with the lowest heat.

In this embodiment, a suitable edge node is preferentially scheduled according to the access heat level of the target content resource to obtain the target content resource, and if the access heat level of the target content resource is highest, the single-line edge node (i.e., the first single-line edge node) that receives the access request sent by the resource demand end obtains the target content resource; if the access heat level of the target content resource is high, acquiring the target content resource by a single-wire edge node (namely a second single-wire edge node) which is configured in advance to acquire the content resource with the access heat level being high; if the access heat level of the target content resource is the lowest, acquiring the target content resource by a multi-line edge node (namely, a first multi-line edge node) which is pre-configured to acquire the content resource with the lowest access heat level.

In this embodiment, if the access popularity level of the target content resource is the first access popularity level, a first access policy is generated, where the first access policy is used to instruct that the target content resource is acquired through the first single-wire edge node.

Specifically, when the target content resource belongs to the first access popularity level, the access popularity of the target content resource is higher, which means that the target content resource is frequently acquired by most single-wire edge nodes in the content distribution network in a historical time period, the probability that the first single-wire edge node successfully acquires the target content resource locally is higher, and the first single-wire edge node can directly acquire the local target content resource. And if the first single-wire edge node successfully acquires the target content resource locally, the first single-wire edge node returns the target content resource to the resource demand end. If the first single-wire edge node fails to acquire the target content resource locally, the first single-wire edge node can send an access request for acquiring the target content resource to an upper node in the content distribution network through a public network or an intranet. And if the corresponding upper node successfully acquires the target content resource locally, the corresponding upper node sequentially transmits the target content resource to the first single-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the corresponding upper node fails to acquire the target content resource locally, the corresponding upper node returns a source to the source station to acquire the target content resource provided by the source station. And the target content resource provided by the source station is sequentially transmitted to the corresponding upper node, the first single-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the source station does not provide the target content resource, access failure information is generated, and the source station sequentially transmits the access failure information to the corresponding upper node, the first single-line edge node and the resource demand end until the resource demand end receives the returned access failure information.

In this embodiment, if the access popularity level of the target content resource is the second access popularity level, a second access policy is generated, where the second access policy is used to instruct that the target content resource is acquired through the second single-wire edge node.

Specifically, when the target content resource belongs to the second access popularity level, the access popularity of the target content resource is higher, which means that the access frequency of the target content resource is general, and the probability that the single-wire edge node which is configured in advance and acquires the content resource with the general access frequency successfully accesses the target content resource is higher, so that the second single-wire edge node can acquire the target content resource. The second single-line edge node is obtained by inquiring the corresponding relation between the predetermined characterization hash result and the single-line edge node. For ease of understanding and distinction, the correspondence between the characterization hash result and the single-line edge node is referred to as a second correspondence. The second correspondence is used for indicating a single-line edge node corresponding to a hash result obtained by performing hash operation on the URI (Uniform Resource Identifier ) of the content resource, that is, the corresponding content resource is preferentially acquired through the corresponding single-line edge node. Further optionally, in order to accurately determine the access policy, as an example, hash operations are performed on URIs of the content resources provided by the source station, so as to obtain hash results corresponding to the content resources; distributing single-line edge nodes corresponding to the content resources; and establishing a second corresponding relation between the hash result and the single-line edge node according to the hash result and the single-line edge node corresponding to each content resource.

In this embodiment, the dispatch center system first obtains the URI of the target content resource, determines a second single-wire edge node that can access the target content resource based on the URI of the target content resource and the second correspondence, and generates a second access policy based on an IP (Internet Protocol ) address of the second single-wire edge node. To accurately determine the access policy, as an alternative implementation, generating a second access policy for indicating acquisition of the target content resource by the second single-wire edge node includes: inquiring a second pre-established corresponding relation according to a target hash result corresponding to the URI of the target content resource to determine a second single-line edge node corresponding to the target hash result, wherein the second corresponding relation is used for representing the corresponding relation between the hash result and the single-line edge node; acquiring an IP address of a second single-wire edge node; and generating a second access strategy comprising the IP address of the second single-wire edge node, wherein the second access strategy is used for indicating the resource demand end to request the second single-wire edge node to acquire the target content resource according to the IP address of the second single-wire edge node.

In practical applications, the second single-wire edge node may successfully obtain the target content resource locally, or may fail to obtain the target content resource locally. In some optional embodiments, to ensure access reliability of the content resource, the second access policy further indicates that, in a case where the second single-wire edge node does not obtain the target content resource from the local, the second single-wire edge node requests to obtain the target content resource from the first upper node through the public network or the intranet. It should be noted that when the second single-wire edge node requests the first upper node to obtain the target content resource, if there is the first upper node in the same intranet (i.e., local area network) as the edge source node, the second single-wire edge node requests the first upper node to obtain the target content resource through the intranet. Compared with the second edge node accessing the first upper layer node through the public network, the second single-line edge node accessing the first upper layer node through the intranet greatly reduces the bandwidth cost of the content distribution network.

In this embodiment, the first upper node is one of multiple upper nodes, and the second single-line edge node sends an access request for obtaining a target content resource to the first upper node when the local obtaining of the target content resource fails, the first upper node responds to the access request to obtain the target content resource locally, and if the first upper node obtains the target content resource locally successfully, the target content resource is sequentially transferred to the second single-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the first upper node fails to acquire the target content resource locally, the first upper node returns the source to the source station. And if the source station has the target content resource, the source station sequentially transmits the target content resource to the first upper node, the second single-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the source station does not have the target content resource, access failure information is generated, and the source station sequentially transmits the access failure information to the first upper node, the second single-line edge node and the resource demand end until the resource demand end receives the returned access failure information.

In this embodiment, if the access popularity level of the target content resource is the third access popularity level, a third access policy is generated, where the third access policy is used to instruct the target content resource to be acquired through the first multi-line edge node.

Specifically, when the target content resource belongs to the third access popularity level, the access popularity of the target content resource is lower, and the probability of successfully acquiring the target content resource by the preconfigured multi-line edge node for acquiring the content resource with lower access frequency is higher, so that the first multi-line edge node can acquire the target content resource. The first multi-line edge node is obtained by inquiring a predetermined corresponding relation between the characterization hash result and the multi-line edge node. For ease of understanding and distinction, the correspondence between the token hash result and the multi-line edge node is referred to as a third correspondence. The third correspondence is used for indicating the multi-line edge node corresponding to the hash result obtained based on the hash operation on the URI of the content resource, that is, the corresponding content resource is preferentially accessed through the corresponding multi-line edge node. Further optionally, in order to accurately determine the access policy, as an example, hash operations are performed on URIs of the content resources provided by the source station, so as to obtain hash results corresponding to the content resources; distributing corresponding multi-line edge nodes for each content resource; and establishing a third corresponding relation between the hash result and the multi-line edge node according to the hash result and the multi-line edge node corresponding to each content resource.

In this embodiment, the dispatch center system first obtains the URI of the target content resource, determines the first multi-line edge node capable of obtaining the target content resource based on the URI of the target content resource and the third correspondence, and generates the third access policy based on the IP address of the first multi-line edge node. In order to accurately determine the access policy, as an alternative implementation manner, according to a target hash result corresponding to the URI of the target content resource, querying a third preset corresponding relation to determine a first multi-line edge node corresponding to the target hash result, where the third corresponding relation is used to characterize a corresponding relation between the hash result and the multi-line edge node; acquiring an IP address of a first multi-line edge node; and generating a third access strategy comprising the IP address of the first multi-line edge node, wherein the third access strategy is used for indicating a resource demand end to request the first multi-line edge node to acquire target content resources according to the IP address of the first multi-line edge node.

In practical applications, the first multi-line edge node may successfully obtain the target content resource locally, or may fail to obtain the target content resource locally. In some alternative embodiments, to ensure access reliability of the content resource, the third access policy further indicates that the first multi-wire edge node requests the second upper node to obtain the target content resource through the intranet in a case where the first multi-wire edge node does not obtain the target content resource from the local. It is worth noting that a plurality of upper nodes are arranged in an intranet where the multi-line edge nodes are located, so that compared with the case that the multi-line edge nodes access the upper nodes through the intranet and access the upper nodes through the public network, the bandwidth cost of the content distribution network can be greatly reduced.

Specifically, the second upper node is one of a plurality of upper nodes, and the first multi-line edge node requests the second upper node to acquire the target content resource through the intranet under the condition that the local acquisition of the target content resource fails. It is noted that the second upper node and the first multi-line edge node are located in the same local area network, so that the bandwidth cost brought by accessing the upper node through the public network is greatly reduced. And if the second upper node successfully acquires the target content resource locally, sequentially transmitting the target content resource to the first multi-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the second upper node fails to acquire the target content resource locally, the second upper node returns the source to the source station. And if the source station has the target content resource, the source station sequentially transmits the target content resource to the second upper node, the first multi-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the source station does not have the target content resource, access failure information is generated, and the source station sequentially transmits the access failure information to the second upper node, the first multi-line edge node and the resource demand end until the resource demand end receives the returned access failure information.

In this embodiment, the dispatch center system returns an access policy to the first edge node, and the access links of the target content resource are different with different access policies. Under a first access policy, the access link is a first single line edge node-upper node-source station. Under a second access policy, the access link is a first single line edge node-a second single line edge node-a first upper layer node-a source station. Under a third access policy, the access link is a first single-wire edge node-a first multi-wire edge node-a second upper node-a source station. For a description of acquiring content resources according to an access link, reference is made to the foregoing.

According to the technical scheme, when the resource demand end requests to acquire the content resource from any single-wire edge node, the single-wire edge node does not acquire the content resource directly and returns the content resource to the resource demand end, but schedules proper single-wire edge node or multi-wire edge node to acquire the content resource and returns the content resource to the resource demand end according to different access heat levels of the content resource, so that the probability that the edge node successfully acquires the content resource is improved, the access hit rate of the edge node is greatly increased, the frequency of accessing the upper node is reduced, the bandwidth cost of a content distribution network is effectively controlled, and the service cost of the content distribution network is effectively reduced. In addition, content resources in the resource demand end are not required to be acquired by the edge nodes, so that the transformation cost of the resource demand end is reduced.

In order to better understand the technical solution provided by the embodiments of the present application, a signaling interaction process of a content resource obtaining method based on a content distribution network is described below by taking a content distribution network including a single-line edge node and a multi-line edge node as an example.

Fig. 4 is a signaling interaction diagram of a content resource obtaining method based on a content distribution network according to an embodiment of the present application.

Referring to fig. 4, the method may include the steps of:

401. the resource demand end sends a first access request for acquiring the target content resource to the first single-wire edge node.

402. The first single-wire edge node sends an access policy acquisition request to the dispatch center system in response to the first access request.

403. The dispatch center system determines an access popularity level of the target content resource in response to the access policy acquisition request.

404. And the dispatching center system generates an access strategy according to the access heat level of the target content resource, wherein the access strategy is used for indicating the target content resource to be acquired through the target edge node.

405. The dispatch center system sends an access policy to the first single-wire edge node.

406. And if the first access policy is received, the first access policy indicates that the target content resource is acquired through the first single-wire edge node, and the first single-wire edge node acquires the target content resource.

407. The first single-wire edge node sends the target content resource to the resource demand end.

Specifically, if the first single-wire edge node successfully obtains the target content resource locally, the first single-wire edge node returns the target content resource to the resource demand end. If the first single-wire edge node fails to acquire the target content resource locally, the first single-wire edge node can send an access request for acquiring the target content resource to an upper node in the content distribution network through a public network or an intranet. And if the corresponding upper node successfully acquires the target content resource locally, the corresponding upper node sequentially transmits the target content resource to the first single-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the corresponding upper node fails to acquire the target content resource locally, the corresponding upper node returns a source to the source station to acquire the target content resource provided by the source station. And the target content resource provided by the source station is sequentially transmitted to the corresponding upper node, the first single-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the source station does not provide the target content resource, access failure information is generated, and the source station sequentially transmits the access failure information to the corresponding upper node, the first single-line edge node and the resource demand end until the resource demand end receives the returned access failure information.

408. And if the second access policy is received, the second access policy indicates that the target content resource is acquired through the second single-wire edge node, and the first single-wire edge node sends the IP address of the second single-wire edge node to the resource demand end.

409. And the resource demand end sends a second access request for acquiring the target content resource to the second single-wire edge node according to the IP address of the second single-wire edge node.

410. And the second single-wire edge node responds to the second access request to acquire the target content resource.

411. And the second single-wire edge node sends the target content resource to the resource demand end.

Specifically, if the second single-wire edge node successfully obtains the target content resource locally, the second single-wire edge node returns the target content resource to the resource demand end. If the second single-line edge node fails to acquire the target content resource locally, an access request for acquiring the target content resource is sent to the first upper node, the first upper node responds to the access request to acquire the target content resource locally, and if the first upper node successfully acquires the target content resource locally, the target content resource is sequentially transmitted to the second single-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the first upper node fails to acquire the target content resource locally, the first upper node returns the source to the source station. And if the source station has the target content resource, the source station sequentially transmits the target content resource to the first upper node, the second single-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the source station does not have the target content resource, access failure information is generated, and the source station sequentially transmits the access failure information to the first upper node, the second single-line edge node and the resource demand end until the resource demand end receives the returned access failure information.

412. If a third access policy is received, the third access policy indicates that the target content resource is acquired through the first multi-line edge node, and the first single-line edge node sends the IP address of the first multi-line edge node to the resource demand end.

413. And the resource demand end sends a third access request for acquiring the target content resource to the first multi-line edge node according to the IP address of the first multi-line edge node.

414. The first multi-line edge node responds to the third access request to acquire the target content resource.

415. The first multi-line edge node sends the target content resource to the resource demand end.

Specifically, if the first multi-line edge node successfully obtains the target content resource locally, the target content resource is returned to the resource demand end. If the first multi-line edge node fails to acquire the target content resource locally, requesting to acquire the target content resource from the second upper node through the intranet. And if the second upper node successfully acquires the target content resource locally, sequentially transmitting the target content resource to the first multi-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the second upper node fails to acquire the target content resource locally, the second upper node returns the source to the source station. And if the source station has the target content resource, the source station sequentially transmits the target content resource to the second upper node, the first multi-line edge node and the resource demand end until the resource demand end receives the returned target content resource. If the source station does not have the target content resource, access failure information is generated, and the source station sequentially transmits the access failure information to the second upper node, the first multi-line edge node and the resource demand end until the resource demand end receives the returned access failure information.

According to the technical scheme, when the resource demand end requests to acquire the content resource from any single-wire edge node, the single-wire edge node does not acquire the content resource directly and returns the content resource to the resource demand end, but schedules proper single-wire edge node or multi-wire edge node to acquire the content resource and returns the content resource to the resource demand end according to different access heat levels of the content resource, so that the probability that the edge node successfully acquires the content resource is improved, the access hit rate of the edge node is greatly increased, the frequency of accessing the upper node is reduced, the bandwidth cost of a content distribution network is effectively controlled, and the service cost of the content distribution network is effectively reduced. In addition, the content resources in the resource demand end are acquired by the edge nodes, so that the transformation cost of the resource demand end is reduced.

Fig. 5 is a flowchart of another method for obtaining content resources based on a content distribution network according to an embodiment of the present application. The method is performed by a content resource access device based on a content distribution network, which device may be comprised of software and/or hardware, which device may be configured in any first edge node of a plurality of edge nodes comprised in the content distribution network. Referring to fig. 5, the method may include the steps of:

501. And responding to a first access request for acquiring the target content resource, which is sent by the resource demand end, and sending an access strategy acquisition request.

502. And receiving an access policy returned in response to the access policy acquisition request, wherein the access policy is used for indicating that the target content resource is acquired through the first edge node or the second edge node.

503. And acquiring the target content resource according to the access strategy and returning the target content resource to the resource demand end, or informing the resource demand end to acquire the target content resource through the second edge node.

Further optionally, the first edge node comprises a first single-wire edge node, or the second edge node comprises a second single-wire edge node or a first multi-wire edge node, the first single-wire edge node and the second single-wire edge node allowing access to one operator network, the first multi-wire edge node allowing access to a plurality of operator networks;

correspondingly, acquiring the target content resource according to the access strategy and returning the target content resource to the resource demand end, or notifying the resource demand end to acquire the target content resource through the second edge node, including:

if a first access strategy indicating to acquire the target content resource through the first single-wire edge node is received, acquiring the target content resource and returning the target content resource to the resource demand end; or if a second access strategy for indicating to acquire the target content resource through the second single-wire edge node is received, the IP address of the second single-wire edge node is sent to the resource demand end, so that the resource demand end requests the second single-wire edge node to acquire the target content resource according to the IP address of the second single-wire edge node; or if a third access strategy for indicating to acquire the target content resource through the first multi-line edge node is received, the IP address of the first multi-line edge node is sent to the resource demand end, so that the resource demand end requests the first multi-line edge node to acquire the target content resource according to the IP address of the first multi-line edge node.

The specific implementation manner and the technical effect of each step in the method provided in the embodiment of the present application may refer to the specific implementation manner and the technical effect of each step in the foregoing embodiment, which are not described herein again.

Fig. 6 is a flowchart of another method for obtaining content resources based on a content distribution network according to an embodiment of the present application. The method is performed by a content resource access device based on a content distribution network, which may be comprised of software and/or hardware, which may be configured in a resource requiring end. Referring to fig. 6, the method may include the steps of:

601. sending a first access request to a first single-wire edge node, wherein the first access request is used for requesting to acquire target content resources;

602. receiving a target content resource returned by the first single-line edge node; or alternatively, the process may be performed,

603. receiving an IP address of a second single-wire edge node returned by the first single-wire edge node;

604. sending a second access request to the second single-wire edge node according to the IP address of the second single-wire edge node, wherein the second access request is used for requesting to acquire target content resources;

605. receiving a target content resource returned by the second single-line edge node; or alternatively, the process may be performed,

606. receiving an IP address of a first multi-line edge node returned by the first single-line edge node;

607. Sending a third access request to the first multi-line edge node according to the IP address of the first multi-line edge node, wherein the third access request is used for requesting to acquire target content resources;

608. and receiving a target content resource returned by the first multi-line edge node.

Fig. 7 is a schematic structural diagram of a content resource access device according to an embodiment of the present application. The apparatus may be comprised of software and/or hardware. Referring to fig. 7, the apparatus may include:

a determining module 71, configured to determine an access popularity level of a target content resource in response to an access policy acquisition request sent by a first edge node when the resource demand end requests to acquire the target content resource;

a generating module 72, configured to generate an access policy according to the access heat level of the target content resource, where the access policy is used to instruct the target content resource to be acquired by the first edge node or the second edge node;

and the sending module 73 is configured to return an access policy to the first edge node, so that the first edge node obtains the target content resource and returns the target content resource to the resource demand end, or the first edge node notifies the resource demand end to obtain the target content resource through the second edge node.

Further optionally, the first edge node comprises a first single line edge node or the second edge node comprises a second single line edge node or a first multi-line edge node, the first single line edge node and the second single line edge node allow access to one operator network, the first multi-line edge node allows access to a plurality of operator networks;

accordingly, the generating module 72 is specifically configured to, when generating the access policy according to the access heat level of the target content resource: if the access heat level of the target content resource is the first access heat level, generating a first access strategy, wherein the first access strategy is used for indicating that the target content resource is acquired through a first single-wire edge node; if the access heat level of the target content resource is the second access heat level, generating a second access strategy, wherein the second access strategy is used for indicating that the target content resource is acquired through a second single-wire edge node; if the access heat level of the target content resource is the third access heat level, generating a third access strategy, wherein the third access strategy is used for indicating that the target content resource is acquired through the first multi-line edge node; the access heat level is sequentially a first access heat level, a second access heat level and a third access heat level from high to low.

Further optionally, when the generating module 72 generates the second access policy, the generating module is specifically configured to: inquiring a second pre-established corresponding relation according to a target hash result corresponding to a Uniform Resource Identifier (URI) of the target content resource to determine a second single-line edge node corresponding to the target hash result, wherein the second corresponding relation is used for representing the corresponding relation between the hash result and the single-line edge node; acquiring an IP address of a second single-wire edge node; and generating a second access strategy comprising the IP address of the second single-wire edge node, wherein the second access strategy is used for indicating the resource demand end to request the second single-wire edge node to acquire the target content resource according to the IP address of the second single-wire edge node.

Further optionally, the second access policy further indicates that the second single-wire edge node requests the first upper node to acquire the target content resource in a case where the second single-wire edge node does not acquire the target content resource from the local.

Further optionally, the apparatus further includes: the establishing module is used for: performing hash operation on URIs of all content resources provided by a source station respectively to obtain hash results corresponding to all the content resources; distributing single-line edge nodes corresponding to the content resources; and establishing a second corresponding relation between the hash result and the single-line edge node according to the hash result and the single-line edge node corresponding to each content resource.

Further optionally, when the generating module 72 generates the third access policy, the generating module is specifically configured to: inquiring a pre-established third corresponding relation according to a target hash result corresponding to the URI of the target content resource to determine a first multi-line edge node corresponding to the target hash result, wherein the third corresponding relation is used for representing the corresponding relation between the hash result and the multi-line edge node; acquiring an IP address of a first multi-line edge node; and generating a third access strategy comprising the IP address of the first multi-line edge node, wherein the third access strategy is used for indicating a resource demand end to request the first multi-line edge node to acquire target content resources according to the IP address of the first multi-line edge node.

Further optionally, the third access policy further indicates that the first multi-wire edge node requests the second upper node to obtain the target content resource through the intranet in case the first multi-wire edge node does not obtain the target content resource from the local.

Further optionally, the establishing module is further configured to: performing hash operation on URIs of all content resources provided by a source station respectively to obtain hash results corresponding to all the content resources; distributing corresponding multi-line edge nodes for each content resource;

And establishing a third corresponding relation between the hash result and the multi-line edge node according to the hash result and the multi-line edge node corresponding to each content resource.

Further optionally, when the determining module 71 determines the access heat level of the target content resource, the determining module is specifically configured to: determining the access heat level of each of the plurality of content resources according to the access times of each of the plurality of content resources; establishing a first corresponding relation between the content resources and the access heat level according to the access heat level of each of the plurality of content resources; and inquiring the first corresponding relation, and acquiring the access heat level of the target content resource.

The apparatus shown in fig. 7 may perform the method of the embodiment shown in fig. 2 or fig. 3, and the implementation principle and technical effects thereof will not be described again. The specific manner in which the various modules and units perform the operations in the apparatus shown in fig. 7 in the above embodiments has been described in detail in the embodiments of the related methods, and will not be described in detail herein.

Fig. 8 is a schematic structural diagram of another content resource access device according to an embodiment of the present application. The apparatus may be comprised of software and/or hardware and may be configured in a first single-wire edge node in a content distribution network. Referring to fig. 8, the apparatus may include:

The sending module 81 is configured to send an access policy obtaining request in response to a first access request sent by the resource demand end for obtaining a target content resource.

The receiving module 82 is configured to receive an access policy returned in response to the access policy obtaining request, where the access policy is used to instruct the obtaining of the target content resource by the first edge node or the second edge node.

The processing module 83 is configured to obtain the target content resource according to the access policy and return the target content resource to the resource demand end, or notify the resource demand end to obtain the target content resource through the second edge node.

Further optionally, the first edge node comprises a first single line edge node, or the second edge node comprises a second single line edge node or a first multi-line edge node, the first single line edge node and the second single line edge node allowing access to one operator network, the first multi-line edge node allowing access to a plurality of operator networks.

Correspondingly, the processing module 83 obtains the target content resource according to the access policy and returns the target content resource to the resource demand end, or notifies the resource demand end to obtain the target content resource through the second edge node, which is specifically configured to:

The apparatus shown in fig. 8 may perform the method of the embodiment shown in fig. 5, and its implementation principles and technical effects will not be repeated. The specific manner in which the various modules and units perform the operations in the apparatus shown in fig. 5 in the above embodiments has been described in detail in the embodiments of the related methods, and will not be described in detail herein.

Fig. 9 is a schematic structural diagram of another content resource access device according to an embodiment of the present application. The apparatus may be comprised of software and/or hardware, and the apparatus may be configured in a resource-requiring end. Referring to fig. 9, the apparatus may include:

a sending module 91, configured to send a first access request to a first single-wire edge node, where the first access request is used to request to acquire a target content resource;

a receiving module 92, configured to receive a target content resource returned by the first single-wire edge node; or alternatively, the process may be performed,

the receiving module 92 is further configured to receive an IP address of the second single-wire edge node returned by the first single-wire edge node;

the sending module 91 is further configured to send a second access request to the second single-wire edge node according to the IP address of the second single-wire edge node, where the second access request is used to request to obtain the target content resource;

The receiving module 92 is further configured to receive a target content resource returned by the second single-wire edge node; or alternatively, the process may be performed,

the receiving module 92 is further configured to receive an IP address of the first multi-line edge node returned by the first single-line edge node;

the sending module 91 is further configured to send a third access request to the first multi-line edge node according to the IP address of the first multi-line edge node, where the third access request is used to request to obtain the target content resource;

the receiving module 92 is further configured to receive a target content resource returned by the first multi-line edge node.

The apparatus shown in fig. 9 may perform the method of the embodiment shown in fig. 6, and its implementation principles and technical effects will not be repeated. The specific manner in which the respective modules and units perform the operations in the apparatus shown in fig. 9 in the above embodiments has been described in detail in the embodiments of the related methods, and will not be described in detail herein.

It should be noted that, the execution subjects of each step of the method provided in the above embodiment may be the same device, or the method may also be executed by different devices. For example, the execution subject of steps 301 to 304 may be device a; for another example, the execution subject of

steps

301 and 302 may be device a, and the execution subject of step 303 may be device B; etc.

In addition, in some of the flows described in the above embodiments and the drawings, a plurality of operations appearing in a specific order are included, but it should be clearly understood that the operations may be performed out of the order in which they appear herein or performed in parallel, the sequence numbers of the operations such as 301, 302, etc. are merely used to distinguish between the various operations, and the sequence numbers themselves do not represent any order of execution. In addition, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. It should be noted that, the descriptions of "first" and "second" herein are used to distinguish different messages, devices, modules, etc., and do not represent a sequence, and are not limited to the "first" and the "second" being different types.

Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 10, the electronic device includes: a memory 101 and a processor 102;

memory 101 for storing computer programs and may be configured to store various other data to support operations on the computing platform. Examples of such data include instructions for any application or method operating on a computing platform, contact data, phonebook data, messages, pictures, videos, and the like.

The Memory 101 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random access Memory (Static Random-AccessMemory, SRAM), electrically erasable programmable Read-Only Memory (Electrically Erasable Programmable Read Only Memory, EEPROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic or optical disk.

A processor 102 coupled to the memory 101 for executing the computer program in the memory 101 for performing the steps in the content resource acquisition method based on the content distribution network.

Further, as shown in fig. 10, the electronic device further includes: communication component 103, display 104, power component 105, audio component 106, and other components. Only some of the components are schematically shown in fig. 10, which does not mean that the electronic device only comprises the components shown in fig. 10. In addition, the components within the dashed box in fig. 10 are optional components, not necessarily optional components, depending on the product form of the electronic device. The electronic device in this embodiment may be implemented as a terminal device such as a desktop computer, a notebook computer, a smart phone, or an IOT (internet of things ) device, or may be a server device such as a conventional server, a cloud server, or a server array. If the electronic device of the embodiment is implemented as a terminal device such as a desktop computer, a notebook computer, a smart phone, etc., the electronic device may include components within the dashed line frame in fig. 10; if the electronic device of the embodiment is implemented as a server device such as a conventional server, a cloud server, or a server array, the components within the dashed box in fig. 10 may not be included.

The detailed implementation process of each action performed by the processor may refer to the related description in the foregoing method embodiment or the apparatus embodiment, and will not be repeated herein.

Accordingly, the present application further provides a computer readable storage medium storing a computer program, where the computer program is executed to implement the steps executable by the electronic device in the above method embodiments.

Accordingly, embodiments of the present application also provide a computer program product comprising a computer program/instructions which, when executed by a processor, cause the processor to carry out the steps of the above-described method embodiments that are executable by an electronic device.

The communication component is configured to facilitate wired or wireless communication between the device in which the communication component is located and other devices. The device where the communication component is located can access a wireless network based on a communication standard, such as a mobile communication network of WiFi,2G, 3G, 4G/LTE, 5G, etc., or a combination thereof. In one exemplary embodiment, the communication component receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component further includes a near field communication (Near Field Communication, NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on radio frequency identification (Radio Frequency Identification, RFID) technology, infrared data association (The Infrared Data Association, irDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

The display includes a screen, which may include a liquid crystal display (Liquid Crystal Display, LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation.

The power supply component provides power for various components of equipment where the power supply component is located. The power components may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the devices in which the power components are located.

The audio component described above may be configured to output and/or input an audio signal. For example, the audio component includes a Microphone (MIC) configured to receive external audio signals when the device in which the audio component is located is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may be further stored in a memory or transmitted via a communication component. In some embodiments, the audio assembly further comprises a speaker for outputting audio signals.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one typical configuration, a computing device includes one or more processors (central processing unit, CPUs), input/output interfaces, network interfaces, and memory.

The Memory may include non-volatile Memory in a computer readable medium, random access Memory (Random Access Memory, RAM) and/or non-volatile Memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of computer-readable media.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase Change RAM (PRAM), static Random-Access Memory (SRAM), dynamic Random-Access Memory (Dynamic Random Access Memory, DRAM), other types of Random-Access Memory (Random Access Memory, RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash Memory or other Memory technology, compact disc Read Only Memory (CD-ROM), digital versatile disc (Digital versatile disc, DVD) or other optical storage, magnetic cassettes, magnetic tape storage or other magnetic storage devices, or any other non-transmission medium, operable to store information that may be accessed by the computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. A method of content resource acquisition based on a content distribution network, the content distribution network comprising at least one edge node, the method comprising:

responding to an access strategy acquisition request sent by a first edge node when a resource demand end requests to acquire a target content resource, and determining an access heat level of the target content resource;

Generating an access policy according to the access heat level of the target content resource, wherein the access policy is used for indicating that the target content resource is acquired through the first edge node or the second edge node;

and returning the access strategy to the first edge node so that the first edge node acquires the target content resource and returns the target content resource to the resource demand end, or informing the resource demand end to acquire the target content resource through the second edge node by the first edge node.

2. The method of claim 1, wherein the first edge node comprises a first single-wire edge node or the second edge node comprises a second single-wire edge node or a first multi-wire edge node, the first single-wire edge node and the second single-wire edge node allowing access to one operator network, the first multi-wire edge node allowing access to a plurality of operator networks;

accordingly, generating an access policy according to the access heat level of the target content resource, including:

if the access heat level of the target content resource is a first access heat level, generating a first access policy, wherein the first access policy is used for indicating that the target content resource is acquired through the first single-wire edge node;

If the access heat level of the target content resource is a second access heat level, generating a second access policy, wherein the second access policy is used for indicating that the target content resource is acquired through the second single-wire edge node;

if the access heat level of the target content resource is a third access heat level, generating a third access policy, wherein the third access policy is used for indicating that the target content resource is acquired through the first multi-line edge node;

the first access heat level, the second access heat level and the third access heat level are sequentially arranged from high to low according to the access heat level.

3. The method of claim 2, wherein generating the second access policy comprises:

inquiring a second pre-established corresponding relation according to a target hash result corresponding to a Uniform Resource Identifier (URI) of the target content resource to determine a second single-line edge node corresponding to the target hash result, wherein the second corresponding relation is used for representing the corresponding relation between the hash result and the single-line edge node;

acquiring an IP address of the second single-wire edge node;

And generating the second access policy comprising the IP address of the second single-wire edge node, wherein the second access policy is used for indicating the resource demand end to request the second single-wire edge node to acquire the target content resource according to the IP address of the second single-wire edge node.

4. The method of claim 3, wherein the second access policy further indicates that the second single-wire edge node requests the first upper node to acquire the target content resource if the second single-wire edge node does not acquire the target content resource from local.

5. The method of claim 3, further comprising, prior to querying the pre-established second correspondence:

performing hash operation on URIs of all content resources provided by a source station respectively to obtain hash results corresponding to all the content resources;

distributing single-line edge nodes corresponding to the content resources;

and establishing a second corresponding relation between the hash result and the single-line edge node according to the hash result and the single-line edge node corresponding to each content resource.

6. The method of claim 2, wherein generating the third access policy comprises:

Inquiring a third pre-established corresponding relation according to a target hash result corresponding to the URI of the target content resource to determine the first multi-line edge node corresponding to the target hash result, wherein the third corresponding relation is used for representing the corresponding relation between the hash result and the multi-line edge node;

acquiring an IP address of the first multi-line edge node;

and generating the third access strategy comprising the IP address of the first multi-line edge node, wherein the third access strategy is used for indicating the resource demand end to request the first multi-line edge node to acquire the target content resource according to the IP address of the first multi-line edge node.

7. The method of claim 6, wherein the third access policy further indicates that the first multi-wire edge node requests acquisition of the target content resource from a second upper node via an intranet in the event that the first multi-wire edge node does not acquire the target content resource locally.

8. The method of claim 6, further comprising, prior to querying a pre-established third correspondence:

Distributing corresponding multi-line edge nodes for each content resource;

9. The method of claim 6, wherein determining the access heat level of the target content resource comprises:

determining the access heat level of each of the plurality of content resources according to the access times of each of the plurality of content resources;

establishing the first corresponding relation between the content resource and the access heat level according to the access heat level of each of the plurality of content resources;

and inquiring the first corresponding relation to acquire the access heat level of the target content resource.

10. A content resource acquisition method based on a content distribution network, characterized in that the content distribution network comprises at least one edge node;

applied to a first edge node, the method comprising:

responding to a first access request for acquiring target content resources, which is sent by a resource demand end, and sending an access strategy acquisition request;

receiving an access policy returned in response to the access policy acquisition request, wherein the access policy is used for indicating that the target content resource is acquired through the first edge node or the second edge node;

And acquiring the target content resource according to the access strategy and returning the target content resource to the resource demand end, or notifying the resource demand end to acquire the target content resource through the second edge node.

11. The method of claim 10, wherein the first edge node comprises a first single-wire edge node, or wherein the second edge node comprises a second single-wire edge node or a first multi-wire edge node, the first single-wire edge node and the second single-wire edge node allowing access to one operator network, the first multi-wire edge node allowing access to a plurality of operator networks;

correspondingly, acquiring the target content resource according to the access policy and returning the target content resource to the resource demand end, or notifying the resource demand end to acquire the target content resource through the second edge node, including:

if a first access strategy indicating to acquire the target content resource through the first single-wire edge node is received, acquiring the target content resource and returning the target content resource to the resource demand end; or alternatively, the process may be performed,

if a second access strategy indicating to acquire the target content resource through a second single-wire edge node is received, an IP address of the second single-wire edge node is sent to the resource demand end, so that the resource demand end requests the second single-wire edge node to acquire the target content resource according to the IP address of the second single-wire edge node; or alternatively, the process may be performed,

And if a third access strategy indicating to acquire the target content resource through the first multi-line edge node is received, the IP address of the first multi-line edge node is sent to the resource demand end, so that the resource demand end requests the first multi-line edge node to acquire the target content resource according to the IP address of the first multi-line edge node.

12. A method of content resource acquisition based on a content distribution network, the content distribution network comprising at least one edge node, the method comprising:

sending a first access request to a first single-wire edge node, wherein the first access request is used for requesting to acquire target content resources;

receiving the target content resource returned by the first single-wire edge node; or alternatively, the process may be performed,

receiving an IP address of a second single-wire edge node returned by the first single-wire edge node;

sending a second access request to the second single-wire edge node according to the IP address of the second single-wire edge node, wherein the second access request is used for requesting to acquire the target content resource;

receiving the target content resource returned by the second single-wire edge node; or alternatively, the process may be performed,

Receiving an IP address of the first multi-line edge node returned by the first single-line edge node;

sending a third access request to the first multi-line edge node according to the IP address of the first multi-line edge node, wherein the third access request is used for requesting to acquire the target content resource;

and receiving the target content resource returned by the first multi-line edge node.

13. An electronic device, comprising: a memory and a processor; the memory is used for storing a computer program; the processor is coupled to the memory for executing the computer program for performing the steps in the method of any of claims 1-12.

14. A computer readable storage medium storing a computer program, which when executed by a processor causes the processor to carry out the steps of the method of any one of claims 1-12.