WO2021032123A1

WO2021032123A1 - Method, apparatus, and system for acheiving policy scheduling

Info

Publication number: WO2021032123A1
Application number: PCT/CN2020/110021
Authority: WO
Inventors: 武炳亮; 张宇; 朱伟
Original assignee: 南京中兴新软件有限责任公司
Priority date: 2019-08-19
Filing date: 2020-08-19
Publication date: 2021-02-25
Also published as: CN112468848A

Abstract

Disclosed in embodiments of the present application are a method, apparatus, and system for achieving policy scheduling. The method is applied in an optical line terminal (OLT), the OLT is provided with a local content delivery network (CDN) service module, and the method for achieving policy scheduling comprises: determining whether a video playback request on a user side complies with a preset policy; and when the video playback request on the user side complies with the preset policy, forwarding the video playback request on the user side to the local CDN service module.

Description

Method, device and system for implementing strategy scheduling

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with application number 201910764483.5 on August 19, 2019. The entire content of this application is incorporated into this application by reference.

Technical field

The embodiments of the present application relate to, but are not limited to, a content delivery network CDN, for example, relate to a method, device, and system for implementing policy scheduling.

Background technique

CDN (Content Delivery Network) is a content delivery network. The basic idea is to avoid bottlenecks and links on the Internet that may affect the speed and stability of data transmission, so that content transmission can be faster and more stable. By placing node servers everywhere in the network constituted by a layer of intelligent virtual network based on the Internet in related technologies, the CDN system can in real time according to the network traffic and the connection of each node, the load status, and the distance and response to the user Comprehensive information such as time redirects the user's request to the service node closest to the user. Its purpose is to enable users to obtain the required content nearby, solve the congestion of the Internet network, and improve the response speed of users visiting the website.

In recent years, fixed-line broadband and IPTV (Internet Protocol Television)/OTT TV (Over-The-Top TV) services of Chinese telecom operators have developed rapidly. With the promotion of unlimited mobile packages, some convergent transmission networks And metropolitan area transmission network has a transmission bottleneck; at the same time, due to PPPoE (Point-to-Point Protocol Over Ethernet) access, the multicast replication point is not moved down to the OLT (Optical Line Terminal, optical line terminal) , The unicast mode supports OTT live broadcasts, which aggravates the network congestion, which in turn affects user expansion and service quality improvement. At the same time, live broadcast needs such as 8K (resolution) and VR (Virtual Reality) also require greater Network bandwidth.

Summary of the invention

The embodiment of the application provides a method for implementing policy scheduling, which is applied to an optical line terminal OLT, where the OLT is provided with a local content distribution network CDN service module, and the method for implementing policy scheduling includes:

Determine whether the video playback request on the user side meets the preset strategy;

In the case that the video playback request on the user side meets the preset policy, forward the video playback request on the user side to the local CDN service module.

The embodiment of the present application also provides a device for implementing policy scheduling, which is applied to an optical line terminal OLT, and the device includes:

OLT strategy module and local content distribution network CDN service module;

The OLT policy module is configured to determine whether the received video playback request complies with a preset policy; in the case that the received video playback request complies with the preset policy, forward the received video playback request to the local CDN Service module.

The embodiment of the present application also provides a system for implementing policy scheduling, which includes: an optical line terminal OLT and a global scheduling module; the OLT is provided with a local content distribution network CDN service module;

The OLT is configured to determine whether the received video playback request complies with a preset policy; in the case that the video playback request complies with the preset policy, forward the video playback request to the local CDN service module; If the video playback request does not conform to the preset strategy, forward the video playback request to an external global scheduling module.

An embodiment of the present application also provides a device for implementing policy scheduling, including a memory, a processor, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor At the time, implement the above-mentioned method of implementing policy scheduling.

An embodiment of the present application also provides a computer-readable storage medium having an information processing program stored on the computer-readable storage medium, and when the information processing program is executed by a processor, the foregoing method for implementing policy scheduling is implemented.

Description of the drawings

FIG. 1 is a schematic flowchart of a method for implementing policy scheduling provided by an embodiment of the application;

2 is a schematic structural diagram of a device for implementing policy scheduling provided by an embodiment of this application;

3 is a schematic structural diagram of a system for implementing policy scheduling provided by an embodiment of the application;

4 is a schematic structural diagram of another system for implementing policy scheduling provided by an embodiment of this application;

FIG. 5 is a schematic flowchart of another method for implementing policy scheduling provided by an embodiment of the application;

FIG. 6 is a schematic diagram of a signal flow when the preset strategy is not met according to an embodiment of the application;

FIG. 7 is a schematic flowchart of another method for implementing policy scheduling according to an embodiment of the application;

FIG. 8 is a schematic diagram of another signal flow when the preset strategy is not met according to an embodiment of the application;

FIG. 9 is a schematic diagram of a process of pushing hot content in an embodiment of this application.

detailed description

The steps shown in the flowchart of the drawings may be executed in a computer system such as a set of computer-executable instructions. And, although a logical sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than here.

In the embodiment of this application, a CDN is deployed in the OLT, and the video playback request sent by the user side is strategically forwarded to provide video services nearby; thus, it makes full use of the bandwidth potential of the FTTH (Fiber To The Home) network, and greatly The throughput capacity of the entire network is improved, and the value of the optical access network is fully tapped.

FIG. 1 is a schematic flowchart of a method for implementing policy scheduling provided by an embodiment of the application. This method is applied to an optical line terminal OLT, which is provided with a local content distribution network CDN service module, as shown in FIG. 1, including steps 101 to 102.

In step 101, it is determined whether the received video playback request from the user side meets a preset policy;

In step 102, in the case that the video playback request on the user side meets the preset policy, the video playback request on the user side is forwarded to the local CDN service module.

Wherein, the preset policy is that the local CDN service module is normal and the video playback request on the user side complies with the hijacking rule.

Wherein, the forwarding of the user-side video playback request to the local CDN service module includes:

The original destination address of the video playback request on the user side is converted to the address of the local CDN service module, and the converted video playback request is forwarded to the local CDN service module.

Wherein, after forwarding the converted video playback request to the local CDN service module, the method further includes:

The local CDN service module retrieves local cache resources according to the received converted video playback request;

When the resource corresponding to the converted video playback request exists locally, directly sending the video playback response to the user side;

If the resource corresponding to the converted video playback request does not exist locally, pull the resource corresponding to the converted video playback request to the superior CDN service module, and then send the video playback response to the user side;

Wherein, the video playback response carries the resource corresponding to the converted video playback request, and the original source address of the video playback response is converted to the original destination address of the video playback request on the user side.

Among them, the method also includes:

In the case that the video playback request on the user side does not conform to the preset policy, the video playback request on the user side is forwarded to an external global scheduling module.

Among them, the method also includes:

The local CDN service module receives a content push-down notification sent by an external intelligent analysis system, and the content push-down notification carries resources that require content push-down;

According to the content push-down notification, the higher-level CDN service module pulls the resources that need to be pushed-down.

Among them, the method also includes:

Regularly monitor the status of the local CDN service module;

When the load of the local CDN service module is too high or unavailable, it is determined that the local CDN service module is abnormal.

Fig. 2 is a schematic structural diagram of a device for implementing policy scheduling provided by an embodiment of the application. The device is applied to an optical line terminal OLT, as shown in Figure 2, the device includes:

OLT strategy module and local CDN service module;

The OLT policy module is configured to determine whether the received video playback request meets the preset policy; in the case that the received video playback request meets the preset policy, forward the received video playback request to the local CDN service module .

Wherein, the OLT strategy module includes: an OLT strategy forwarding module and a CDN strategy processing module;

The OLT policy forwarding module is configured to determine whether the received video playback request complies with the preset policy; in the case that the received video playback request complies with the preset policy, forward the received video playback request to the CDN policy processing module;

The CDN policy processing module is configured to convert the original destination address of the received video playback request to the address of the local CDN service module, and forward the converted video playback request to the local CDN service module.

Wherein, the local CDN service module is configured to retrieve local cached resources according to the received converted video playback request; in the case where resources corresponding to the converted video playback request exist locally, send the The CDN policy processing module sends a video playback response; when there is no resource corresponding to the converted video playback request locally, the superior CDN service module pulls the resource corresponding to the converted video playback request, and sends it to the The CDN policy processing module sends a video playback response; wherein, the video playback response carries the resource corresponding to the converted video playback request;

The CDN policy processing module is further configured to convert the original source address of the video playback response to the original destination address of the received video playback request, and forward the converted video playback response to the user side.

Among them, the device also includes:

The OLT CDN status monitoring module is set to periodically monitor the status of the local CDN service module;

In the case that the load of the local CDN service module is too high or unavailable, the OLT policy forwarding module is notified that the local CDN service module is abnormal.

Fig. 3 is a schematic structural diagram of a system for implementing policy scheduling provided by an embodiment of the application. As shown in Figure 3, the system includes:

Optical line terminal OLT and global scheduling module; the OLT is provided with a local content distribution network CDN service module;

The OLT is configured to determine whether the received video playback request complies with the preset policy; in the case that the video playback request complies with the preset policy, forward the video playback request to the local CDN service module; when the video playback request is not If the preset strategy is met, the video playback request is forwarded to an external global scheduling module.

Among them, the system also includes: a superior CDN service module;

The local CDN service module is configured to retrieve the local cache resource according to the received video playback request; when the resource corresponding to the video playback request exists locally, directly send the video playback response to the user side; locally In the case that there is no resource corresponding to the video playback request, pull the resource corresponding to the video playback request to the higher-level CDN service module, and then send a video playback response to the user side; wherein, the video playback response carries the video The resource corresponding to the playback request is played, and the original source address of the video playback response is converted to the original destination address of the video playback request.

Among them, the system also includes: an intelligent analysis system,

The intelligent analysis system is configured to analyze CDN service access logs, filter out a list of popular access files, and generate content push notifications for files that are not pushed down by hotspots in the list of popular access files, and send them to the local CDN service module ; The content push notification carries the resources that need to be pushed down;

The local CDN service module is further configured to pull the resources that need to be pushed down to the higher-level CDN service module according to the content push-down notification.

Wherein, the global scheduling module is configured to return the address of the upper-level CDN service module to the user side according to the video play request, so that the user side sends a video play request to the upper-level CDN service module.

Fig. 4 is a schematic structural diagram of another system for implementing policy scheduling provided by an embodiment of the application. As shown in Figure 4, the system includes:

Global dispatch module, superior CDN service module, OLT equipment and intelligent analysis system;

Wherein, the global scheduling module is set to be responsible for the global redirection of the user's video playback request, and returns the nearest local CDN service module address according to the user's address ownership.

Wherein, the OLT equipment includes: an OLT policy forwarding module, a CDN policy processing module, a local CDN service module, and an OLT CDN status monitoring module;

The OLT policy forwarding module: Responsible for analyzing and processing the upstream video playback request sent by the user side (user terminal). When the local CDN service module is normal, it will policy forward the video playback request that meets the hijacking rule and forward the video playback request. Forward to the CDN policy processing module; in the case of abnormal status of the local CDN service module, the request is allowed to pass, that is, forwarded to the global scheduling module;

The CDN policy processing module: responsible for analyzing and processing the video playback request forwarded by the OLT policy forwarding module, replacing the destination address of the video playback request, converting it to the internal address of the CDN server, and sending the video playback request to the local CDN Service module.

The local CDN service module: Responsible for receiving the video playback request from the user side, retrieving locally cached resource information according to the content of the user request, and directly returning the corresponding data stream to the user when there is a resource corresponding to the video playback request locally; In the case that there is no resource corresponding to the video playback request locally, according to the user's request, pull back to the source from the higher-level CDN service module;

Exemplarily, the built-in blade of the OLT can be used to deploy a local CDN service module.

The OLT CDN status monitoring module: Responsible for monitoring and detecting the operating status of the local CDN service module, and promptly notify the OLT policy forwarding module when the local CDN service module status is abnormal, so as not to hijack the user service request and let it go .

Among them, the upper-level CDN service module is the normal home CDN service node of the user. When the local CDN service module in the OLT is in abnormal state, the user directly uses the upper-level CDN service module for service; at the same time, the local CDN service module in the OLT requires If the content resource does not exist, the local CDN service module in the OLT will pull the content resource from the higher-level CDN service module.

Wherein, the intelligent analysis system includes: a content popularity statistics module and a content push module;

The content popularity statistics module: Responsible for collecting the access records of users of the CDN system of the entire network, counting the accessed TOP hot resources, ranking the hot resources, and generating a corresponding TOP N hot file list according to the configuration;

The content push module: triggers the content push task based on the hot files counted by the content heat statistics module, sends the content push task to the local CDN service module of the OLT, and informs it to send the hot files to the local CDN service module in advance. The upper-level CDN service module pulls resources.

FIG. 5 is a schematic flowchart of another method for implementing policy scheduling provided by an embodiment of the application.

This embodiment is applied to the system shown in FIG. 4, and is based on the system shown in FIG. 4. FIG. 6 is a schematic diagram of the signal flow provided in this embodiment when the preset strategy is met.

As shown in FIG. 5, the method includes step 501 to step 511.

In step 501, the user terminal initiates a video playback request.

Exemplarily, as shown in Figure 6, label 1: the destination address of the video playback request DST (destination) is the address of the global scheduling module: IP2, and the source address SRC (source) is STB-1 (Set Top Box, set-top box) Address: IP1;

The video request is first sent to the OLT policy forwarding module in the OLT.

In step 502, the OLT policy forwarding module determines whether the received video playback request complies with a preset policy.

Wherein, the preset policy is that the local CDN service module is normal and the video playback request complies with the hijacking rule.

Exemplarily, the OLT policy forwarding module sets the policy PBR (Policy Based Routing) and hijacking rules in advance. For example, in this embodiment, the hijacking rules are: Hypertext Transfer Protocol (HyperText Transfer Protocol) whose destination request address is IP2 Transfer Protocol, HTTP) request for hijacking. In the case of receiving the user's video playback request, if it is determined that the destination address of the request complies with the hijacking rules, and the local CDN service module is in normal state at this time, the request originally needed to be sent to the global scheduling module is forwarded to the CDN policy processing module At this time, the request destination address remains unchanged, and it is still the global scheduling module address: IP2, for example, as shown in Figure 6: label 2.

If the destination address of the request complies with the hijacking rules, steps 503-507 are executed, and if the destination address of the request does not meet the hijacking rules, steps 508-511 are executed:

In step 503, the OLT policy forwarding module forwards the video playback request to the CDN policy processing module.

In step 504, the CDN policy processing module converts the original destination address of the video playback request to the address of the local CDN service module, and forwards the converted video playback request to the local CDN service module.

Exemplarily, the CDN policy processing module monitors all request protocol packets, and also monitors Transmission Control Protocol (TCP) packets whose destination address is not the local address. When the request packet is received, it performs packet processing, and The request destination address of the message is replaced with the service address IP4 of the local CDN service module, and the request message is sent to the local CDN service module, for example, the number 3 shown in FIG. 6.

In step 505, the local CDN service module retrieves local cache resources according to the received converted video playback request.

If the resource corresponding to the converted video playback request exists locally, step 506 is executed, and if the resource corresponding to the converted video playback request does not exist locally, step 507 is executed.

In step 506, the video playback response is directly sent to the user side.

In step 507, the higher-level CDN service module pulls the resource corresponding to the converted video playback request, and then sends the video playback response to the user side.

Wherein, the video playback response carries the resource corresponding to the converted video playback request, and the original source address of the video playback response is converted to the original destination address of the video playback request.

Exemplarily, the local CDN service module receives and processes the user's playback request, first searches for locally cached resources, and directly provides services to the user when there is a resource corresponding to the user's playback request locally. In the case that there is no resource corresponding to the user's playback request locally, the upper-level CDN service module initiates a return request; after the upper-level CDN service module receives the return request initiated by the local CDN service module, it extracts the data from the local cache and provides the information. Streaming service: After receiving the data, the local CDN service module saves the data locally; for example, the

numbers

4 and 5 shown in Figure 6. At the same time, the data stream is returned to the relevant user. The process is that the data stream is first sent to the CDN policy processing module. At this time, the source address of the data stream is the CDN service module address IP4, and the CDN policy processing module receives the data from the local CDN service module. For the user’s spit-out response, modify the response packet header, replace the source address of the data stream with the global scheduling module address IP2, and send the response to the OLT policy forwarding module. After receiving the request, the OLT policy forwarding module returns the final result to the user Video playback response, for example, as shown in Figure 6:

Numbers

6, 7, 8.

In this way, for the user, the user thinks that this is a normal global scheduling and service response, and the response is given by the global scheduling module.

In step 508, the OLT policy forwarding module forwards the video playback request to an external global scheduling module.

In step 509, the global scheduling service module receives the video playback request, and returns the corresponding upper-level CDN service module address according to the user's belonging.

In step 510, the user terminal receives the address given by the global scheduling service module, and initiates a video playback request to the corresponding upper-level CDN service module again.

In step 511, the upper-level CDN service module receives the user's video playback request and returns the corresponding video stream to the user.

The technical solution provided in this embodiment deploys a local CDN service module in the OLT, and implements policy forwarding on user service requests through the original OLT built-in policy module (OLT policy forwarding module and CDN policy processing module) to realize user-insensitive Internet video distribution sinking service method. And cooperate with the hotspot statistics and push system to realize the timely push down of hot content, increase the hit rate of user visits, and effectively enhance user service perception.

FIG. 7 is a schematic flowchart of another method for implementing policy scheduling provided by an embodiment of the application.

This embodiment is applied to the system shown in FIG. 4. Based on the system shown in FIG. 4, FIG. 8 is another schematic diagram of signal flow provided in this embodiment when the preset strategy is not met.

As shown in FIG. 7, the method includes step 701 to step 707.

In step 701, the OLT CDN status monitoring module regularly monitors the status of the local CDN service module.

Exemplarily, the OLT CDN status monitoring module periodically initiates a status load query request to the local CDN service module. The query content includes the current connection status of the node, the traffic status, the disk, the central processing unit (CPU) usage load and other data. When the load of the local CDN service module is too high, the node load alarm will be returned to the OLT CDN status monitoring module; when the local CDN service module equipment is unavailable, the load query message will fail to be sent and the OLT CDN status Perceived by the monitoring module.

In step 702, when the status monitoring module determines that the local CDN service module is abnormal, it immediately reports the event to the OLT policy forwarding module to notify the abnormality.

Wherein, when the load of the local CDN service module is too high or unavailable, it is determined that the local CDN service module is abnormal.

Among them, after the OLT policy forwarding module receives the abnormal alarm, it records the abnormal state of the local CDN service module as a judgment basis for subsequent scheduling.

In step 703, the user terminal initiates a video playback request.

Exemplarily, as shown in Figure 8, the video playback request is first sent to the OLT policy forwarding module in the OLT.

In step 704, the OLT policy forwarding module determines that the received video play request does not conform to the preset policy, and forwards the video play request to the external global scheduling module.

Exemplarily, after the OLT policy forwarding module receives the request, it judges that the request can be hijacked, and then queries the status of the local CDN service module. At this time, if the local CDN service module node is found to be abnormal, the request will not be hijacked, and this request will be released. For the second request, the user normally requests the global scheduling service module, such as the number 2 shown in FIG. 8, and sends it to the global scheduling module through the BRAS (Broadband Remote Access Server).

In step 705, the global scheduling service module receives the user's request, and returns the corresponding upper-level CDN service module address according to the user's belonging.

For example, the number 3 shown in Figure 8.

In step 706, the user terminal receives the address given by the global scheduling service module, and initiates a play request again to the corresponding upper-level CDN service module.

For example, the number 5 shown in FIG. 8.

In step 707, the superior CDN service receives the user's request and returns the corresponding video stream to the user.

For example, the number 6 shown in FIG. 8.

This embodiment is also applied to the system shown in FIG. 4, and on the basis of the above two embodiments, a hot content push process is added. FIG. 9 is a schematic diagram of a hot content push process in this embodiment.

As shown in Figure 9, the process of pushing hot content includes steps 901 to 907.

In step 901, after the upper-level CDN service module completes the access request of the user terminal, it automatically generates a business access log.

In step 902, the upper-level CDN service module periodically uploads the aggregated access logs to the content popularity statistics module of the intelligent analysis system for processing.

In step 903, the content popularity statistics module analyzes and processes the collected access logs, extracts file information according to the user's request from the Uniform Resource Locator (URL), performs access statistics and rankings on the files, and filters out the most visited files List.

In step 904, the content popularity statistics module regularly pushes the generated hot file list to the hotspot push module of the intelligent analysis system.

In step 905, the hotspot push module analyzes the hot files, generates a hot push task for the content that has no hot push, and pushes it to a designated local CDN service module.

In step 906, after the local CDN service module receives the message, it parses the task list, generates a drop-down queue for files that do not exist locally, and then goes to the higher-level CDN service module to drop down the files.

In step 907, the local CDN service module sequentially pulls down the hot files, saves the files locally, and reports the pull-down result.

In this way, this hot push-down task is finally completed.

The technical solution provided in this embodiment cooperates with the hotspot statistics and push system to realize timely push down of hotspot content, improve the hit rate of user access, and effectively improve user service perception.

The technical solutions provided by the embodiments of this application make full use of the bandwidth potential of the FTTH network, provide nearby video services, greatly increase the throughput capacity of the entire network, and fully tap the value of the optical access network; at the same time, make full use of the access computer room space and OLT The vacant slots enable it to play the function of a distributed data center and revitalize the large-scale access equipment room resources of operators.

An embodiment of the present application also provides a device for implementing policy scheduling, including a memory, a processor, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor When, implement any of the above-mentioned methods for implementing policy scheduling.

An embodiment of the present application also provides a computer-readable storage medium having an information processing program stored on the computer-readable storage medium, and when the information processing program is executed by a processor, the implementation strategy scheduling described in any one of the above is implemented Methods.

A person of ordinary skill in the art can understand that all or some of the steps, functional modules/units in the system, and apparatus in the methods disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may consist of multiple The physical components cooperate to execute. Some or all components may be implemented as software executed by a processor, such as a digital signal processor or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, and the computer-readable medium may include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile memory implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Flexible, removable and non-removable media. Computer storage media include, but are not limited to, Random Access Memory (RAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), and flash memory Or other memory technologies, Compact Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical disk storage, magnetic cassettes, tapes, magnetic disk storage or other magnetic storage devices Or any other medium that can be used to store desired information and can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, communication media usually contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as carrier waves or other transmission mechanisms, and may include any information delivery media .

Claims

A method for implementing policy scheduling is applied to an optical line terminal OLT, where the OLT is provided with a local content distribution network CDN service module, and the method for implementing policy scheduling includes:

Determine whether the video playback request on the user side meets the preset strategy;

In the case that the video playback request on the user side meets the preset policy, forward the video playback request on the user side to the local CDN service module.
The method of claim 1, wherein:

The preset policy is that the local CDN service module is normal and the user-side video playback request complies with the hijacking rule.
The method according to claim 1, wherein the forwarding the user-side video playback request to the local CDN service module comprises:

The original destination address of the video playback request on the user side is converted to the address of the local CDN service module, and the converted video playback request is forwarded to the local CDN service module.
The method according to claim 3, after forwarding the converted video playback request to the local CDN service module, further comprising:

The local CDN service module retrieves local cache resources according to the received converted video playback request;

In the case that the resource corresponding to the converted video playback request exists locally, directly sending the video playback response to the user side;

In the case that there is no resource corresponding to the converted video playback request locally, pull the resource corresponding to the converted video playback request to the superior CDN service module, and then send the video playback response to the user side;

Wherein, the video playback response carries the resource corresponding to the converted video playback request, and the original source address of the video playback response is converted to the original destination address of the video playback request on the user side.
The method according to claim 1, further comprising:

In the case that the video playback request on the user side does not meet the preset policy, the video playback request on the user side is forwarded to an external global scheduling module.
The method according to claim 1, further comprising:

The local CDN service module receives a content push-down notification sent by an external intelligent analysis system, and the content push-down notification carries resources that require content push-down;

According to the content push-down notification, the higher-level CDN service module pulls the resources that need to be pushed-down.
The method according to claim 1, further comprising:

Regularly monitor the status of the local CDN service module;

When the load of the local CDN service module is too high or unavailable, it is determined that the local CDN service module is abnormal.
A device for implementing policy scheduling, applied to an optical line terminal OLT, and the device includes:

OLT strategy module and local content distribution network CDN service module;

The OLT policy module is configured to determine whether the received video playback request complies with a preset policy; in the case that the received video playback request complies with the preset policy, forward the received video playback request to the local CDN Service module.
The device according to claim 8, wherein:

The OLT strategy module includes: an OLT strategy forwarding module and a CDN strategy processing module;

The OLT policy forwarding module is configured to determine whether the received video play request meets a preset policy; in the case that the received video play request meets the preset policy, forward the received video play request to all The CDN strategy processing module;

The CDN policy processing module is configured to convert the original destination address of the received video playback request to the address of the local CDN service module, and forward the converted video playback request to the local CDN service module.
The device according to claim 9, wherein:

The local CDN service module is configured to retrieve local cache resources according to the received converted video playback request; in the case where resources corresponding to the converted video playback request exist locally, send a policy to the CDN The processing module sends a video playback response; in the case that there is no resource corresponding to the converted video playback request locally, pull the resource corresponding to the converted video playback request to the superior CDN service module, and send it to the CDN The policy processing module sends a video playback response; wherein, the video playback response carries the resource corresponding to the converted video playback request;

The CDN policy processing module is further configured to convert the original source address of the video playback response to the original destination address of the received video playback request, and forward the converted video playback response to the user side.
The device according to claim 9, further comprising:

The OLT CDN status monitoring module is set to periodically monitor the status of the local CDN service module;

In the case that the load of the local CDN service module is too high or unavailable, the OLT policy forwarding module is notified that the local CDN service module is abnormal.
A system for implementing strategic scheduling includes: an optical line terminal OLT and a global scheduling module; the OLT is provided with a local content distribution network CDN service module;

The OLT is configured to determine whether the received video playback request complies with a preset policy; in the case that the video playback request complies with the preset policy, forward the video playback request to the local CDN service module; If the video playback request does not conform to the preset strategy, forward the video playback request to an external global scheduling module.
The system according to claim 12, further comprising: an upper-level CDN service module;

The local CDN service module is configured to retrieve the local cache resource according to the received video playback request; when the resource corresponding to the video playback request exists locally, directly send the video playback response to the user side; locally If there is no resource corresponding to the video play request, pull the resource corresponding to the video play request from the higher-level CDN service module, and then send a video play response to the user side; wherein, the video play response The resource corresponding to the video playback request is carried, and the original source address of the video playback response is converted to the original destination address of the video playback request.
The system according to claim 12, further comprising: an intelligent analysis system,

The intelligent analysis system is configured to analyze CDN service access logs, filter out a list of popular access files, and generate content push notifications for files that are not pushed down by hotspots in the list of popular access files, and send them to the local CDN service module ; The content push notification carries the resources that need to be pushed;

The local CDN service module is further configured to pull the resources that need to be pushed down to the higher-level CDN service module according to the content push-down notification.
The system according to claim 12, wherein:

The global scheduling module is configured to return the upper-level CDN service module address to the user side according to the video play request, so that the user side sends the video play request to the upper-level CDN service module.
A device for implementing policy scheduling, comprising a memory, a processor, and a computer program stored on the memory and running on the processor. When the computer program is executed by the processor, the implementation is as claimed in claim 1. The method for implementing policy scheduling described in any one of to 7.
A computer-readable storage medium having an information processing program stored on the computer-readable storage medium, and when the information processing program is executed by a processor, the implementation strategy scheduling according to any one of claims 1 to 7 is realized Methods.