WO2014146541A1

WO2014146541A1 - Cdn and network convergence system, scheduling module selection method and computer storage medium

Info

Publication number: WO2014146541A1
Application number: PCT/CN2014/072941
Authority: WO
Inventors: 黄孙亮; 陈建业; 吴萍
Original assignee: 中兴通讯股份有限公司
Priority date: 2013-03-21
Filing date: 2014-03-05
Publication date: 2014-09-25
Also published as: CN103200033B; CN103200033A

Abstract

Disclosed are a CDN and network convergence system, a scheduling module selection method and a computer storage medium. The scheduling module selection method is applied to the CDN and network convergence system. The CDN and network convergence system comprises a plurality of CDN service devices. The CDN service devices comprise scheduling modules. The method comprises: selecting a main scheduling module and a standby master scheduling module from the plurality of scheduling modules contained in the plurality of CDN service devices in a multicast mode, wherein the main scheduling module is configured for conducting unified scheduling on an access request applied by a client for access and the standby master scheduling module is configured for quickly replacing the main scheduling module for conducting unified scheduling on the access request applied by the client for access when the main scheduling module has failed.

Description

CDN and network fusion system, scheduling module selection method and calculation *^储介庸 Technical field

The present invention relates to the field of communication network technologies, and in particular, to a Content Delivery Network (CDN) and network convergence system, a scheduling module selection method, and a computer storage medium. Background technique

In the current Internet industry chain, telecom operators provide network services, and Internet Content Providers (ISPs)/Internet Service Providers (ISPs) provide application services, which are completely isolated. Telecom operators cannot influence and control application services, while ICP/ISP cannot sense and control the network. When users use application services, there are two main factors that affect the user experience: application quality and network quality. In many cases, the user's network bandwidth is sufficient, and the network quality is also good, but the performance of the application system is insufficient to provide satisfactory service for the user; and when the application system quality is good and the user can provide excellent service, the user's network bandwidth is insufficient. The network quality is poor, so the quality of the service cannot be guaranteed. It can be seen that the two are indispensable. Only when the two are combined and protected at the same time can the user's business experience be fundamentally guaranteed. In addition, since the current CDN system generally adopts the 1 : 1 active/standby mode for reliability guarantee, this method cannot effectively meet the reliability requirements of multiple CDN service devices after CDN and network convergence. Therefore, a new method is needed to improve the reliability of the system. Summary of the invention

In order to solve the existing technical problems, embodiments of the present invention provide a CDN and network convergence system, a scheduling module selection method, and a computer storage medium, which are designed to improve the stability of a CDN and a network convergence system, thereby improving user usage. Experience. To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows: The embodiment of the present invention provides a scheduling module selection method, which is applied to a CDN and network convergence system, where the CDN and network convergence system includes multiple CDNs. The service device, the CDN service device includes a scheduling module, and the method includes:

In the multicast mode, among the multiple scheduling modules included in the plurality of CDN service devices, the primary scheduling module and the standby primary scheduling module are selected;

The primary scheduling module is configured to uniformly schedule access requests of the client access application;

The standby primary scheduling module is configured to, when the primary scheduling module fails, take over the access scheduling request by the primary scheduling module to the client access application.

Preferably, the selecting the primary scheduling module and the standby primary scheduling module, among the multiple scheduling modules included in the plurality of the CDN service devices, includes:

a configuration preference level of the plurality of scheduling modules included in the plurality of the CDN service devices, a device slot number of the CDN service device, a medium access control (MAC) address of the CDN service device, and a location The Internet Protocol (IP, Internet Protocol) address of the CDN service device and the internal address of the CDN service device select the primary scheduling module and the standby primary scheduling module.

Preferably, after the selecting the primary scheduling module and the standby primary scheduling module, the method further includes:

Establishing a survival detection mechanism between the primary scheduling module and the standby primary scheduling module, and detecting, according to the survival detection mechanism, whether the primary scheduling module and/or the standby primary scheduling module are faulty.

Preferably, the survival detection mechanism is established between the primary scheduling module and the standby primary scheduling module, and detecting whether the primary scheduling module and/or the standby primary scheduling module are generated according to the survival detection mechanism Faults include: Determining, in the preset fault period, whether the number of the survival detection packets received by the primary scheduling module and/or the standby primary scheduling module is zero, when the primary scheduling module determines the received survival When the number of the detected packets is zero, it is determined that the standby primary scheduling module is faulty; when the standby primary scheduling module determines that the number of received survival detection packets is zero, it is determined that the primary scheduling module is faulty; The result is processed accordingly;

The survival detection packet is sent to the other party by the primary scheduling module and/or the standby primary scheduling module according to a preset detection packet interval.

Preferably, the performing the corresponding processing according to the fault result comprises:

When it is determined that the primary scheduling module is faulty, triggering the standby primary scheduling module to be upgraded to a primary scheduling module;

When it is determined that the standby primary scheduling module is faulty, a new primary primary scheduling module is triggered to be reselected.

The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores a computer program, and the computer program is used to execute the scheduling module selection method according to the embodiment of the invention.

The embodiment of the present invention further provides a CDN and a network convergence system, where the CDN and network convergence system includes a plurality of CDN service devices, and the CDN service device includes a scheduling module. The system further includes:

The selected module is configured to adopt a multicast mode, and among the multiple scheduling modules included in the plurality of CDN service devices, the active scheduling module is selected, and the primary scheduling module is configured to access the application for the client. Accessing the request for unified scheduling; selecting an alternate primary scheduling module, the standby primary scheduling module configured to take over the access scheduling request of the primary scheduling module to the client access application when the primary scheduling module fails .

Preferably, the selected module is configured to pass a configuration preference level of a plurality of scheduling modules included in the plurality of CDN service devices, a device slot number of the CDN service device, and the CDN. The primary scheduling module and the secondary primary scheduling module are selected by a MAC address of the service device, an IP address of the CDN service device, and an internal address of the CDN service device.

Preferably, the system further includes a mechanism establishment and fault detection module, configured to establish a survival detection mechanism between the primary scheduling module and the standby primary scheduling module, and detect the primary usage according to the survival detection mechanism. Whether the scheduling module and/or the standby primary scheduling module has failed.

Preferably, the mechanism establishment and fault detection module comprises:

The determining sub-module is configured to determine, during a preset fault period, whether the number of the survival detection packets received by the primary scheduling module and/or the standby primary scheduling module is zero, when the primary scheduling module determines to receive When the number of the survival detection packets is zero, it is determined that the standby primary scheduling module is faulty, and when the standby primary scheduling module determines that the number of the received survival detection packets is zero, it is determined that the primary scheduling module is faulty; The survival detection message is sent by the primary scheduling module and/or the standby primary scheduling module to the other party according to the preset detection packet interval;

The processing submodule is configured to perform corresponding processing according to the fault result when it is determined that the primary scheduling module and/or the standby primary scheduling module are faulty.

Preferably, the processing submodule is configured to trigger the standby main scheduling module to be upgraded as a main scheduling module when determining that the main scheduling module is faulty; and triggering reselection when determining that the standby main scheduling module is faulty New alternate master scheduling module.

The technical solution provided by the embodiment of the present invention selects a primary scheduling for uniformly scheduling an access request of a client accessing application among multiple scheduling modules included in multiple CDN service devices by using a multicast manner. The module, and an alternate primary scheduling module for selecting a unified scheduling of the access request of the client access application by the primary scheduling module when the primary scheduling module fails. The service scheduling modules of multiple CDN service devices are uniformly coordinated by the selected active scheduling module, thereby improving the stability of the CDN and the network convergence system, thereby ensuring service quality and improving the user experience. DRAWINGS

1 is a schematic flowchart of a method 1 for selecting a scheduling module according to an embodiment of the present invention;

2 is a schematic flowchart of a method 2 for selecting a scheduling module according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of detecting whether a primary scheduling module and/or an alternate primary scheduling module fails according to the survival detecting mechanism according to the method 2 of selecting a scheduling module according to an embodiment of the present invention;

4 is a schematic flowchart of performing corresponding processing according to a fault result in a method 2 of selecting a scheduling module according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a CDN and a network convergence system according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of a CDN and a network convergence system according to an embodiment of the present invention; FIG. 7 is a CDN and network fusion according to an embodiment of the present invention; Schematic diagram of the structure of the mechanism establishment and fault detection module in the system. detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a method for selecting a primary and backup scheduling module in a CDN and network convergence system, and combines a CDN function and a network function into a CDN and a network convergence system, and multiple CDN service devices in the CDN and network convergence system. The main scheduling module for uniformly scheduling the access request of the client access application is selected, and the standby main scheduling module that takes over the unified scheduling of the access request of the client access application when the main scheduling module fails The main scheduling module is used to implement the scheduling of the user's access request, so as to ensure the reliability of the CDN and the network convergence system.

1 is a schematic flowchart of a method for selecting a scheduling module according to an embodiment of the present invention. The method is applied to a CDN and a network convergence system, where the CDN and network convergence system includes multiple CDN service devices, The CDN service device includes a scheduling module. As shown in FIG. 1, the method includes: Step 101: In the multicast mode, among the multiple scheduling modules included in the multiple CDN service devices, the primary scheduling module is selected, and the primary scheduling module is configured to perform unified scheduling on the access request of the client access application. .

Step 102: Select an alternate primary scheduling module, where the standby primary scheduling module is configured to take over the access scheduling request of the primary scheduling module to the client access application when the primary scheduling module fails.

In this embodiment, the CDN function and the network function are integrated into a CDN and network convergence system, and the content distribution node of the CDN and the network device are merged as an important component of the network device. The CDN and network convergence system can provide content distribution services for users' applications while providing network services to users; and maintain corresponding user content usage state machines through CDN and CDN components of network convergence systems, through state machines and network components. The linkage between the network and the content can be achieved for a specific user, for a specific time period.

Due to the inherent characteristics of the CDN and the network convergence system, the external application service link, load balancing scheduling, service processing, and content distribution are all handled by the CDN service device, and each CDN service device initially has the same relationship; The point of view requires a unified external service address to be uniformly scheduled. Therefore, at the same time, the external application link service and the scheduling service can be provided only by the scheduling module of one primary CDN service device, and the user's access is scheduled to the service unit of the different CDN service device. In order to implement the scheduling of the user's access request through a fixed scheduling module, the multicast mode is used to select among a plurality of scheduling modules included in the plurality of CDN service devices, that is, an active scheduling module is selected, The client accesses the application's access request for unified scheduling. After receiving the access request of the user accessing the application, the external scheduling address is uniformly issued by the main scheduling module, and an application link is established with the client to perform overall scheduling and load balancing, thereby scheduling the user's access request to the corresponding CDN service device. In the business service module. After the primary scheduling module is selected, in order to prevent the switching speed from being affected when the primary scheduling module fails, an alternate primary scheduling module needs to be selected, so that when the primary scheduling module fails, the standby primary scheduling is adopted. The module directly takes over the main scheduling module, and performs unified scheduling on the access request of the client access application, without waiting for the new main scheduling module to be re-selected to take over the service. The other scheduling modules that are not selected as the primary scheduling module and the standby primary scheduling module serve as the standby scheduling module.

In this embodiment, the selection of the primary scheduling module and the standby primary scheduling module may be through a configuration preference level of multiple scheduling modules included in multiple CDN service devices, a device slot number of the CDN service device, and a CDN service device. The MAC address, the IP address of the CDN service device, and the internal address of the CDN service device are selected. In a specific implementation, the multicasting may be performed by specifying a specific reserved multicast group address in the CDN and the network convergence system as the selected dedicated multicast group of the primary scheduling module and the standby primary scheduling module.

In this embodiment, in the CDN and the network convergence system, an internal interface is deployed between the plurality of CDN service devices and the main control and switching device, and between the network service device and the main control and switching device, for the CDN service. Information exchange between management information, monitoring information, and service deployment between the device or the network service device and the main control and switching device; and a corresponding internal protocol interface is deployed between the CDN service device and the network service device for user status Service management and monitoring, traffic forwarding channels, etc.; internal protocol interfaces are also deployed between multiple CDN service devices for service management, collaboration and monitoring, service access and interaction. Therefore, the primary scheduling module and the standby primary scheduling module communicate with the service service module through the internal protocol interface, and schedule the user's access request to the corresponding service service module, so that the service service module processes the access request of the user, and distributes The corresponding content to the client.

The technical solution provided by the embodiment of the present invention uses a multicast mode to select a primary scheduling for uniformly scheduling an access request of a client access application among multiple scheduling modules included in multiple CDN service devices. Module, and one for when the primary scheduling module fails, An alternate primary scheduling module that takes over the unified scheduling of the access request of the client access application by the primary scheduling module. The service scheduling modules of multiple CDN service devices are uniformly coordinated by the selected active scheduling module, thereby improving the stability of the CDN and the network convergence system, so that the service quality can be guaranteed.

Referring to FIG. 2, FIG. 2 is a schematic flowchart diagram of a method 2 for selecting a scheduling module according to an embodiment of the present invention. Based on the embodiment shown in FIG. 1, after the step 102 is performed, the scheduling module selection method of the embodiment of the present invention further includes:

Step 103: Establish a survival detection mechanism between the primary scheduling module and the standby primary scheduling module, and detect, according to the survival detection mechanism, whether the primary scheduling module and/or the standby primary scheduling module are faulty. .

Here, after selecting the active scheduling module for performing unified scheduling of the access request of the client access application, and as the standby standby primary scheduling module, it is also necessary to establish a survival detection mechanism, that is, in the primary scheduling module. Establishing a survival detection mechanism with the standby primary scheduling module to perform mutual detection, and determining whether the other party is faulty according to the detection result. When it is detected that the primary scheduling module and/or the standby primary scheduling module are faulty, the corresponding mechanism is triggered and corresponding processing is performed.

The technical solution provided in this embodiment, after the primary scheduling module and the standby primary scheduling module are selected, the survival scheduling mechanism is used to mutually interact between the primary scheduling module and the standby primary scheduling module. Detecting and judging whether the other party has a fault, so as to perform corresponding processing in the event of a fault, thereby further ensuring the stability of the CDN and the network convergence system.

The embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program, and the computer program is used to execute the scheduling module according to the embodiment of the present invention. Block selection method.

Referring to FIG. 3, FIG. 3 is a schematic flowchart of detecting whether a failure of an active scheduling module and/or an alternate primary scheduling module according to the survival detecting mechanism according to the method for selecting a scheduling module according to an embodiment of the present invention; Based on the embodiment shown in FIG. 2, step 103 in FIG. 2 includes:

Step 1031: Determine, in a preset fault period, whether the number of the survival detection packets received by the primary scheduling module and/or the standby primary scheduling module is zero, when determining that the primary scheduling module receives When the number of the survival detection packets is zero, step 1032 is performed; when it is determined that the number of the survival detection packets received by the standby primary scheduling module is zero, step 1033 is performed; when the primary scheduling module and/or If the number of the survival detection packets received by the standby primary scheduling module is not zero, step 1034 is performed.

Step 1032: Determine that the standby primary scheduling module is faulty, perform corresponding processing according to the fault result, and continue to step 1034.

Step 1033: Determine that the primary scheduling module is faulty, perform corresponding processing according to the fault result, and continue to step 1034.

Step 1034: End the current operation flow.

In order to facilitate the fault detection of the primary scheduling module and the standby primary scheduling module, the detection mechanism is: the primary scheduling module and the standby primary scheduling module send a survival detection packet to the other party according to the preset detection packet interval, Indicates that your current status is normal.

During the preset fault period, it is determined whether the number of the survival detection messages sent by the other party received by the primary scheduling module and the standby primary scheduling module is zero, and if so, determining that the other party has a fault, when determining the primary scheduling module and When one of the standby main scheduling modules fails, the corresponding processing is further performed according to the fault result. In this embodiment, the preset fault period is a time maximum value of the received survival detection packet set according to the actual situation, and the value can detect the interval of the packet twice or three times. After the preset fault period, if the number of the survival detection packets received by the primary scheduling module or the standby primary scheduling module is zero, it indicates that the standby primary scheduling mode is within this time range. The running state of the block or the main scheduling module is abnormal, so that the party that has failed can be further judged. The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores a computer program, and the computer program is used to execute the scheduling module selection method according to the embodiment of the invention.

4 is a schematic flowchart of performing corresponding processing according to a fault result in a method 2 for selecting a scheduling module according to an embodiment of the present invention. As shown in FIG. 4, the method includes:

Step 201: Determine, in a preset fault period, whether the number of the survival detection packets received by the primary scheduling module and/or the standby primary scheduling module is zero; when determining that the primary scheduling module receives When the number of the surviving detection packets is zero, step 202 to step 203 are performed; when the standby main scheduling module determines that the number of the received survival detecting packets is zero, step 204 to step 205 are performed; When the number of the survival detection packets received by the active scheduling module and/or the standby primary scheduling module is not zero, step 206 is executed to end the current operation flow.

In step 202 to step 203, when the standby primary scheduling module receives the number of the activity detection packets sent by the active scheduling module is zero, it determines that the primary scheduling module is faulty, and triggers the standby primary scheduling module to upgrade to the primary scheduling module.

In step 204 to step 205, when the primary scheduling module receives the number of the activity detection packets sent by the standby primary scheduling module is zero, it determines that the standby primary scheduling module is faulty, and triggers the reselection of the new standby primary scheduling module.

When the survival detection mechanism detects whether the primary scheduling module and the standby primary scheduling module are faulty, if the number of the survival detection packets sent by the primary scheduling module received by the standby primary scheduling module is zero, the primary scheduling module may be determined. If the fault occurs, the fast switching is performed, that is, the standby primary scheduling module is upgraded to the primary scheduling module, and the failed primary scheduling module is replaced, and the access request of the client access application is continuously scheduled. When the standby primary scheduling module detects that the primary scheduling module is faulty through the detection mechanism, triggers the self-upgrading as the primary scheduling module, and simultaneously triggers the update of the internal forwarding table of the device, so that the user's application link request Then, the service access module of the switched main scheduling module is forwarded, and an application link is established with the active scheduling module, and the user's access is scheduled and load balanced by the switched primary scheduling module.

If the primary scheduling module receives the number of the survival detection packets sent by the standby primary scheduling module to be zero, it may determine that the standby primary scheduling module is faulty, and at this time, trigger a new selection mechanism, that is,

In the plurality of scheduling modules included in the CDN and the plurality of CDN service devices of the network convergence system, the new standby main scheduling module is reselected for scheduling the access to the user when the primary scheduling module fails. Load balancing work.

After the primary scheduling module and the standby primary scheduling module are selected, whether the number of the survival detection packets received by the primary scheduling module and the standby primary scheduling module is zero or not is determined in the preset fault period. Fault, and after determining that the primary scheduling module or the standby primary scheduling module has failed, perform corresponding processing. In the case of faults, it can quickly replace and switch, avoiding the need to re-select a new active scheduling module and then switching services, improving the speed of service switching, and ensuring the stability of the CDN and network convergence system.

The invention also provides a CDN and network fusion system. Referring to FIG. 5, FIG. 5 is a schematic structural diagram 1 of a CDN and a network convergence system according to an embodiment of the present invention. As shown in FIG. 5, the CDN and network convergence system provided in this embodiment includes a plurality of CDN service devices 50, and the CDN service device 50 includes a scheduling module 51. The system further includes a selection module 52 configured to adopt In the multicast mode, among the plurality of scheduling modules 51 included in the plurality of CDN service devices 50, the main scheduling module is selected, and the main scheduling module is configured to perform unified scheduling on the access request of the client access application; An alternate primary scheduling module, configured to replace access by the primary scheduling module to a client access application when the primary scheduling module fails Request for unified scheduling.

Due to the inherent characteristics of the CDN and the network convergence system, the externally provided application service links, load balancing scheduling, service processing, and content distribution are all handled by the CDN service device 50, and each CDN service device initially has an equal relationship. From a holistic perspective, the system needs to adopt a unified external service address to perform unified scheduling. Therefore, at the same time, the external application link service and the scheduling service can be provided only by the scheduling module 51 of the primary CDN service device 50, and the user's access is dispatched to the service service modules of the different CDN service devices. In order to realize the scheduling of the user's access request by the fixed scheduling module 51, the selected module 52 selects among the plurality of scheduling modules 51 included in the plurality of CDN service devices 50 by means of multicast, that is, An active scheduling module is selected to uniformly schedule access requests of the client access application. After receiving the access request of the user accessing the application, the user establishes an application link with the client through the unified external service address, performs overall scheduling and load balancing, and then schedules the user's access request to the service service module of the corresponding CDN service device. .

After the primary scheduling module is selected, in order to prevent the switching speed from being affected when the primary scheduling module fails, the selected module 52 also needs to select the standby primary scheduling module, so that when the primary scheduling module fails The standby main scheduling module directly takes over the main scheduling module, and performs unified scheduling on the access request of the client access application, and does not need to wait for the new main scheduling module to be re-selected to take over the service. Others are not selected as the primary scheduling module and the alternate primary scheduling module. The scheduling module of the block acts as an alternate scheduling module.

In this embodiment, the selection of the primary scheduling module and the standby primary scheduling module by the selection module 52 may be through the configuration preference of the plurality of scheduling modules 51 included in the plurality of CDN service devices 50, and the CDN service device 50. The device slot number, the MAC address of the CDN service device 50, the IP address of the CDN service device 50, and the internal address of the CDN service device 50 are selected. The specific implementation can be performed by multicasting, that is, specifying a specific reserved multicast group address within the CDN and the network convergence system as the selected dedicated multicast group of the primary scheduling module and the standby primary scheduling module.

In this embodiment, in the CDN and network convergence system, an internal interface is deployed between the plurality of CDN service devices 50 and the main control and switching devices, and between the network service device and the main control and switching device, for the CDN. The information exchange between the service device 50 or the network service device and the main control and switching device for management information, monitoring information, and service deployment; and the corresponding internal protocol interface is deployed between the CDN service device and the network service device. User status, service management and monitoring, traffic forwarding channels, etc.; internal protocol interfaces are also deployed between multiple CDN service devices for service management, collaboration and monitoring, service access and interaction. Therefore, the primary scheduling module and the standby primary scheduling module communicate with the service service module through the internal protocol interface, and schedule the user's access request to the corresponding service service module, so that the service service module processes the access request of the user, and distributes The corresponding content to the client.

In the embodiment of the present invention, by using a multicast manner, among the multiple scheduling modules included in the plurality of CDN service devices, the main scheduling module for uniformly scheduling the access request of the client access application is selected, and the selection is performed. An alternate primary scheduling module that is used to relay the access request of the active access scheduling module to the client access application when the primary scheduling module fails. The service scheduling modules of multiple CDN service devices are unified and coordinated through the selected active scheduling module, which improves the stability of the CDN and the network convergence system, so that the service quality can be guaranteed.

The CDN and the network convergence system described in this embodiment may be used in practical applications. The CDN server implements the CDN service device 50 and its sub-module scheduling module 51 and the selected module 52 in the CDN and the network convergence system, and in actual applications, the central processing unit (CPU) in the CDN and network convergence system can be used. , Central Processing Unit ), or digital signal processor (DSP, Digital Signal Processor), or programmable gate array J 'J (FPGA, Field-Programmable Gate Array) implementation.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram 2 of a CDN and network convergence system according to an embodiment of the present invention. Based on the foregoing embodiment, the system further includes a mechanism establishment and fault detection module 53 configured to establish a survival detection mechanism between the primary scheduling module and the standby primary scheduling module, and detect the primary according to the survival detection mechanism. Whether there is a failure with the scheduling module and/or the standby primary scheduling module.

After the active scheduling module for uniformly scheduling the access request of the client access application is selected, and the standby primary scheduling module is used as the standby, the mechanism for establishing and detecting the fault detection module 53 is also required to establish a survival detection mechanism, that is, A survival detection mechanism is established between the primary scheduling module and the standby primary scheduling module to perform mutual detection, and determine whether the other party is faulty according to the detection result. When it is detected that the primary scheduling module or the standby primary scheduling module is faulty, the corresponding mechanism is triggered and corresponding processing is performed.

After the active scheduling module and the standby primary scheduling module are selected, the primary scheduling module and the secondary primary scheduling module are mutually detected by the survival detection mechanism to determine whether the other party has a fault, so that the fault occurs. Corresponding processing further ensures the stability of the CDN and network convergence system.

The CDN and network convergence system described in this embodiment may be implemented by a CDN server in the actual application; the CDN service device 50 and its submodule scheduling module 51, the selected module 52 in the CDN and network convergence system, and The mechanism establishment and fault detection module 53 can be implemented by the CPU, the DSP, or the FPGA in the CDN and the network convergence system in practical applications. Referring to FIG. 7, FIG. 7 is a schematic structural diagram of a mechanism for establishing a mechanism and a fault detection module in a CDN and network convergence system according to an embodiment of the present invention; as shown in FIG. 7, in the embodiment, the mechanism establishment and fault detection module 53 includes :

The determining sub-module 531 is configured to determine, in a preset fault period, whether the number of the survival detection packets received by the primary scheduling module and/or the standby primary scheduling module is zero;

The processing submodule 532 is configured to perform corresponding processing according to the fault result when it is determined that the primary scheduling module and/or the standby primary scheduling module are faulty.

In order to facilitate the fault detection of the primary scheduling module and the standby primary scheduling module, the detection mechanism is: the primary scheduling module and the standby primary scheduling module send a survival detection packet to the other party according to the preset detection packet interval, Indicates that your current status is normal. During the preset fault period, the determining sub-module ₅₃ 1 determines whether the number of the survival detection messages sent by the other party received by the primary scheduling module and/or the standby primary scheduling module is zero, and if so, determines the primary usage. The scheduling module and/or the standby primary scheduling module fails; when it is determined that one of the primary scheduling module and the standby primary scheduling module fails, the processing sub-module 532 further performs corresponding processing according to the failure result. In this embodiment, the preset fault period is a time maximum value of the received survival detection packet set according to the actual situation, and the value can detect the interval of the packet twice or three times. After the preset fault period, if the number of the survival detection packets received by the primary scheduling module and/or the standby primary scheduling module is zero, it indicates that the primary scheduling module and/or The running state of the standby main scheduling module is abnormal, so that the party that has failed can be further determined.

In this embodiment, the processing sub-module 532 is configured to: when determining that the primary scheduling module is faulty, triggering the standby primary scheduling module to be upgraded to be the primary scheduling module; when determining that the standby primary scheduling module is faulty, triggering re-selection A new alternate primary scheduling module.

When the survival detection mechanism detects whether the primary scheduling module and the standby primary scheduling module are faulty, if the number of the survival detection packets sent by the primary scheduling module received by the standby primary scheduling module is zero, it is determined that the primary scheduling module appears. Failure, at this time, by processing sub-module 532 The fast switching, that is, triggering the standby main scheduling module to be upgraded as the main scheduling module, succeeding the failed main scheduling module, and continuing to uniformly schedule the access request of the client access application. In this embodiment, when the standby primary scheduling module detects that the primary scheduling module is faulty through the detection mechanism, triggering the self-upgrading as the primary scheduling module, and triggering the update of the internal forwarding table of the device, so that the user's application link The request is forwarded to the service access unit of the switched primary scheduling module, and an application link is established with the primary scheduling module, and the user's access is scheduled and load balanced by the switched primary scheduling module.

If the primary scheduling module receives the number of the survival detection packets sent by the standby primary scheduling module to zero, it may determine that the standby primary scheduling module is faulty. At this time, the processing sub-module 532 triggers a new selection mechanism, that is, on the CDN. And a plurality of scheduling modules included in the plurality of CDN service devices of the network convergence system, re-selecting a new standby primary scheduling module for scheduling and loading access to the user when the primary scheduling module fails Balanced work.

The mechanism establishment and fault detection module 53 and the sub-module thereof in the embodiment: the judgment sub-module 531 and the processing sub-module 532 can be used by the CPU or the DSP in the CDN and the network fusion system in practical applications. , or FPGA implementation.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent flow transformation made by the specification and the drawings of the present invention may be directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention. Industrial applicability

In the embodiment of the present invention, a plurality of scheduling modules included in the plurality of CDN service devices are selected by the multicast scheduling method, and an active scheduling module for uniformly scheduling the access request of the client access application is selected, and selected. An alternate main scheduling module for relaying the access request of the active access scheduling module to the client access application when the primary scheduling module fails. The service scheduling module of multiple CDN service devices is unified and coordinated through the selected active scheduling module, which improves the stability of the CDN and the network convergence system, thereby ensuring the quality of the service and improving the user experience.

Claims

claims

1. A scheduling module selection method, applied in a content distribution network CDN and network integration system. The CDN and network integration system includes multiple CDN service devices. The CDN service device includes a scheduling module. The method includes:

In a multicast manner, a primary scheduling module and a backup primary scheduling module are selected among multiple scheduling modules included in multiple CDN service devices; wherein,

The main scheduling module is configured to uniformly schedule access requests for client access applications;

The standby main scheduling module is configured to take over the main scheduling module to uniformly schedule access requests for client access applications when the main scheduling module fails.

2. The method according to claim 1, wherein the selecting a primary scheduling module and a backup primary scheduling module among multiple scheduling modules included in multiple CDN service devices includes: The configuration priorities of the multiple scheduling modules included in the CDN service device, the equipment slot number of the CDN service device, the media access control MAC address of the CDN service device, the Internet Protocol IP address of the CDN service device, and The internal address of the CDN service device selects the main scheduling module and the backup main scheduling module.

3. The method according to claim 1, wherein after selecting the main scheduling module and the backup main scheduling module, the method further includes:

A survival detection mechanism is established between the main scheduling module and the backup main scheduling module, and whether the main scheduling module and/or the backup main scheduling module fails is detected according to the survival detection mechanism.

4. The method according to claim 3, wherein: a survival detection mechanism is established between the active scheduling module and the backup active scheduling module, and the active scheduling module and the backup active scheduling module are detected according to the survival detection mechanism. /or whether the backup main scheduling module fails, including:

Within the preset fault period, determine whether the active scheduling module and/or the backup active scheduling module Whether the number of survival detection messages received by the block is zero, when the active scheduling module determines that the number of received survival detection messages is zero, it is determined that the backup primary scheduling module is faulty; when the backup primary scheduling module When the scheduling module determines that the number of received survival detection messages is zero, it determines that the main scheduling module is faulty; performs corresponding processing according to the fault result;

Wherein, the survival detection message is sent by the active scheduling module and/or the standby active scheduling module to the other party according to a preset detection message interval.

5. The method according to claim 4, wherein the corresponding processing according to the fault result includes:

When it is determined that the active scheduling module is faulty, the standby active scheduling module is triggered to be upgraded to the active scheduling module;

When it is determined that the standby main scheduling module is faulty, reselection of a new standby main scheduling module is triggered.

6. A CDN and network integration system. The CDN and network integration system includes multiple CDN service devices. The CDN service device includes a scheduling module. The system further includes: a selection module configured to adopt multicast mode. , among multiple scheduling modules included in multiple CDN service devices, select a primary scheduling module, and the primary scheduling module is configured to uniformly schedule access requests for client access applications; select a backup primary scheduling module, the backup main scheduling module is configured to take over the main scheduling module to uniformly schedule access requests for client access applications when the main scheduling module fails.

7. The CDN and network integration system according to claim 6, wherein the selected module is configured to use the configuration priority of a plurality of scheduling modules included in a plurality of the CDN service devices, the CDN service device The equipment slot number, the MAC address of the CDN service device, the IP address of the CDN service device and the internal address of the CDN service device are used to select the main scheduling module and the backup main scheduling module.

8. The CDN and network integration system according to claim 6, wherein the system further It includes a mechanism establishment and fault detection module, configured to establish a survival detection mechanism between the active scheduling module and the backup active scheduling module, and detect the active scheduling module and/or the active scheduling module according to the survival detection mechanism. Whether the backup main scheduling module fails.

9. The CDN and network integration system according to claim 8, wherein the mechanism establishment and fault detection module includes:

The judgment sub-module is configured to judge whether the number of survival detection messages received by the main scheduling module and/or the backup main scheduling module is zero within the preset fault period. When the main scheduling module judges that the number of survival detection messages received is zero, When the number of survival detection messages received is zero, it is determined that the backup main scheduling module is faulty; when the backup main scheduling module determines that the number of survival detection messages received is zero, it is determined that the main scheduling module is faulty; The survival detection message is sent by the active scheduling module and/or the standby active scheduling module to the other party according to a preset detection message interval;

The processing submodule is configured to perform corresponding processing according to the fault result when it is determined that the main scheduling module and/or the backup main scheduling module fails.

10. The CDN and network integration system according to claim 9, wherein the processing sub-module is configured to trigger the upgrade of the standby main scheduling module to the main scheduling module when it is determined that the main scheduling module is faulty; When it is determined that the standby main scheduling module is faulty, reselection of a new standby main scheduling module is triggered.

11. A computer storage medium. A computer program is stored in the computer storage medium. The computer program is used to execute the scheduling module selection method according to any one of claims 1 to 5.