CN101404585B - Policy system and method for implementing content distribution network content management - Google Patents
Policy system and method for implementing content distribution network content management Download PDFInfo
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Abstract
The invention discloses a strategic system realizing content delivery network content management and a method thereof. The system comprises an operation management system and an operation support system. A strategy base system is arranged in CDN network. The strategy base system comprises a strategy generating unit which is used for the generation, the correction and the deletion of a strategy and a strategy searching unit which is used for searching the strategy in a strategy base. The strategy base system responds to the triggering of a CDN operation management system and delivers the strategy to a CDN network management system by a work order form, and the CDN network management system analyzes and executes the strategy. The invention solves the problems that CDN content management is not easy to be maintained and has bad system flexibility.
Description
Technical field
The present invention relates to CDN (content distributing network) service in the internet, be specifically related to a kind of policy system and method that in CDN, realizes Content Management.
Background technology
The purpose of CDN is by increase the new network architecture of one deck in existing internet, with the content release of website near user's network " edge ", make the user can obtain required content nearby, solve the situation of Internet (the Internet) network congestion, improve the response speed of user capture website.
When the parameter of network element in the CDN network or OCS (content source) need be revised, as: the modification of content source address, increase the variation of a channel, network configuration etc. newly, will be referred to network element, reconfigure as the parameter of Cache (buffer memory equipment), GCM (overall content managing module), LCM (local content managing module), DNS (domain name system) etc.
Because Cache quantity is various in the existing network, the modification for a large amount of Cache network element parameter of disperseing has brought inconvenient maintenance, safeguards and make mistakes easily that system extension is poor, and system is dumb, the problem that the service response time is slow.
For example with next scene.When the content source occurrence positions changes (being the IP address change), for this change, need be to the content distribution flow, hit the network element parameter that flow processs such as flow process and miss flow process relate to and make amendment.Make a concrete analysis of the content distribution flow below.
Suppose webpage distribution, do not adopt the content distribution flow implementation procedure of tactfulization method as follows by the Push mode:
1) in the content distribution flow, the keeper sends the webpage synchronization request to Cache equipment;
2) Cache device responds keeper operation sends webpage to the request of content Source Site;
3) the content source website sends to Cache equipment with web page contents.
Because second step related to Cache and obtains content from the content source address, therefore when the content source address changed, the source address parameter of this content that disposes in the Cache equipment must be made corresponding modification.And the Cache One's name is legion, the maintenance workload of content source address of therefore revising each Cache is very big, and makes mistakes easily.
Equally, for hitting flow process and miss flow process, a large amount of network element content source address parameters such as Cache, GCM, LCM also need to upgrade.Here hit the content that Cache equipment buffer memory that flow process is meant that the user of request content visit is directed to will be visited to some extent, if the content that this Cache equipment does not have buffer memory to visit then is called miss flow process.
Summary of the invention
In view of this, the present invention proposes a kind of strategy method that realizes content distribution network content management, solves not easy care of CDN Content Management, the problem of system flexibility difference.
Based on above-mentioned purpose a kind of policy system of realizing content distributing network CDN Content Management provided by the invention, comprise business management system and OSS, Provisioning Policy storehouse system in the CDN network, comprise in this strategy base system: tactful generation unit is used to finish generation, modification and the deletion of strategy; Strategy is searched the unit, is used for carrying out strategy at policy library and searches;
Described strategy base system responds the triggering of described CDN business management system, by worker's simple form formula policy distribution is arrived described CDN network management system, resolves and carry out described strategy by this CDN network management system.
Optionally, the described strategy base system of this system is divided into center policy library and facility strategy storehouse two-stage, and the center policy library is arranged in the CDN management system of national administrative center, and the facility strategy warehouse compartment is in the node manager of the backbone node of CDN network;
In the policy library of described center, define the strategy relevant, and strategy is issued to the facility strategy storehouse with Content Management;
The facility strategy storehouse, the management function that realizes individual node provides corresponding management interface for the CDN management system, be used to respond the triggering of described CDN business management system, by worker's simple form formula policy distribution is arrived described CDN network management system, resolve and carry out described strategy by this CDN network management system.
Optionally, this system described facility strategy storehouse comprises the content strategy server, is used for resolving the network parameter that is included in the content distributing network strategy, and carries out the configuration and the renewal of network parameter.
Optionally, in the described node manager of this system content management engine is set also, is used to realize that concrete operations and flow process control that Content Management is relevant comprise content adding, content synchronization, content update, content unloading, content route.
Optionally, the described strategy base system of this system also comprises the policy distribution module, is used for the policy distribution of the policy library equipment configuration module implementation strategy to the CDN network management system.
Optionally, the described tactful generation unit of this system comprises: be used for the newly-built policy module that strategy is set up, be used to revise the modification policy module of existing strategy, and be used for the deletion strategy module from the policy library deletion strategy.
Optionally, the tactful masterplate that this system also formulates at Different Strategies in this strategy base system, tactful masterplate comprise following one or more combination:
At content distribution policy, defined the mode of content source attribute and content distribution; Distribution policy has also defined the scope and the distribution flow of distribution;
At the content service strategy, defined the mode of content service, the flow process of content service for example, miss processing mode etc.; Content management strategy has defined the mode of Content Management, comprises how content is upgraded.
At subscriber policy, how to have defined information processing user request according to the user;
At the authentication and accounting strategy, how the service that has defined VCDN authenticates, and authentication points where; And authentication mode;
At access control policy, defined the control that how to conduct interviews.
Based on above-mentioned purpose, the present invention also provides a kind of strategy method that realizes content distributing network CDN Content Management, be applied to comprise the CDN network of business management system and OSS, this content distributing network also comprises strategy base system, and comprises the steps:
The CDN business management system triggers tactful calling in the policy library by the worker is single, and this strategy is issued to equipment configuration module 107 implementation strategies of CDN network management system by the policy library generation strategy.
Optionally, the described strategy base system of this method is divided into center policy library and facility strategy storehouse two-stage, the definition a plurality of strategies relevant in the policy library of described center with Content Management, and these strategies are issued to the facility strategy storehouse then.
Optionally, the described facility strategy of this method storehouse comprises the content strategy server,
This content strategy server parses is included in the network parameter in the content distributing network strategy, and carries out the configuration and the renewal of network parameter;
Optionally, this method also is provided with content management engine at each node, realizes that concrete operations and flow process control that Content Management is relevant comprise content adding, content synchronization, content update, content unloading, content route.
Optionally, the described CDN business management system of this method also comprises before the calling of strategy in the policy library by single triggering of worker: be arranged on content management engine in the node and judge and need carry out new configuration, report the CDN business management system.
From above as can be seen, the policy system of realization content distribution network content management provided by the invention and method, for solving the variation owing to the network element parameter, the problem of the not easy care that the variation (being changed to two-stage system by three-level system as network configuration) of business of newly opening (channel) or network configuration brings has proposed the method based on the realization CDN Content Management of strategyization.To the extensibility and the flexibility of system have been guaranteed owing to the modification of the network element parameter strategy modification by policy library realizes.
In summary, the present invention has following advantage:
The configuration of network element improve parameter unification has improved maintenance efficiency.Be unified in the policy library more newly arriving of strategy realized therefore the configuration of the related network elements of the renewal of network element parameter or newly-increased business has been improved maintenance efficiency.
Unified management is safeguarded to be difficult for makeing mistakes.The renewal of Cache network element parameter is related to configuration to a large amount of Cache network elements, and workload is big, makes mistakes easily.Employing based on the strategy method after, unified management is safeguarded to be difficult for makeing mistakes.
System easily expands, and increases flexibility.The configuration variation of system is unified in the policy library carries out, and the variation of configuration parameter realizes the configuration or the renewal of network element parameter by policy distribution.Therefore system easily expands, and increases flexibility.
Service response speed is fast.May relate to the configuration of a plurality of network elements when increasing one newly when professional (as increasing a channel newly), the unified configuration in policy library can be accelerated the response speed of business.
Description of drawings
Fig. 1 is an embodiment of the invention policy library model schematic diagram;
Fig. 2 disposes schematic diagram for embodiment of the invention policy library;
Fig. 3 is an embodiment of the invention content distribution flow schematic diagram.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention wherein is described.
The present invention is for solving not easy care of CDN Content Management, system flexibility difference and the solution based on strategyization that proposes.The present invention has increased a policy library in the CDN management system, referring to shown in Figure 1.
This policy library has defined tactful generation unit 100 and strategy is searched unit 104.Wherein, described tactful generation unit comprises: be used for the newly-built policy module 101 that strategy sets up (newly-built policy module 101 can regulative strategy masterplate), be used to revise existing strategy modification policy module 102, be used for deletion strategy module 103 from the policy library deletion strategy.
The flow process of strategy execution is as follows: when the network element parameter takes place to revise, CDN business management system 105 is by single call (as newly-built policy module 101, modification policy module 102, the deletion strategy module 103) that triggers strategy in the policy library of worker, and this strategy is issued to equipment configuration module 107 implementation strategies of CDN network management system 106 by policy distribution module 108 by policy library.After the strategy execution, the parameter of network element is change automatically just.
The strategy of policy library definition has: content distribution policy, content service strategy, subscriber policy, authentication and accounting strategy, access control policy etc., in advance can be respectively at these policy development policy template, and policy template is defined as follows:
Content distribution policy has defined the mode that content source attribute and content are distributed, for example push mode, Pull mode, intelligent ways of distribution etc.; Distribution policy has also defined the scope and the distribution flow of distribution;
The content service strategy has defined the mode of content service, the flow process of content service for example, miss processing mode etc.;
Content management strategy has defined the mode of Content Management, comprises how content is upgraded;
How subscriber policy has defined the information processing user request according to the user;
The authentication and accounting strategy, how the service that has defined VCDN authenticates, and authentication points is where, for example: for telecommunications ChinaVnet business on one's own account, authentication points is ChinaVnet or SP, for other application, for example: 3G, IPTV, authentication points may be other certificate servers; Authentication mode also needs explanation, for example based on the authentication of number, based on the authentication of token or need not authentication;
Access control policy has defined the control that how to conduct interviews.
When the content source address parameter changes, when perhaps newly-increased service needed is made amendment to the network element parameter, can be by revising the corresponding strategies (as content distribution policy) in the policy library, carry out the renewal that policy distribution is realized parameter then, thereby avoided a large amount of network elements are configured renewal, wherein, the strategy that issues has comprised the variation of content source address.
In a preferred embodiment of the invention, the strategy method that realizes the CDN Content Management realizes in policy database.Policy library is disposed can be divided into two-layer configuration: center policy library 201 and facility strategy storehouse 202.Center policy library 201 is arranged in the CDN management system of national administrative center, and CDN whole nation administrative center is a physics region notion, and it is made up of CDN management system and CDN overall situation equipment.CDN overall situation equipment comprises following equipment: GSLB (GSLB equipment, i.e. Global Server Load Balancer), GRM (global resource management equipment, i.e. Global Resource Management) etc.; Facility strategy storehouse 202 and content management engine 204 are deployed in the node manager.The node manager physical department is deployed in the backbone node of CDN network, has realized the management function of individual node.It is as centre management layer Management Agent (agency) in node, for the CDN management system provides corresponding management interface.Generally, the CDN management system is not direct and CDN equipment is mutual, but finishes equipment control by node manager.CDN equipment refers to node devices such as overall equipment such as GSLB, GRM and SLB.Center policy library 201 has defined the strategy of a series of CDNs relevant with Content Management, as: content distribution policy, content service strategy, content management strategy, subscriber policy, authentication and accounting, access control policy etc., these strategies will form the script of XML, and be issued to the triggering of the described CDN business management system of content strategy server 203 response in the facility strategy storehouse 202, by worker's simple form formula policy distribution is arrived described CDN network management system, resolve and carry out network element parameter configuration and the renewal that requires in the described strategy by this CDN network management system.Execution mode is seen shown in Figure 2, and wherein, content management engine 204 realizes that as an applied logic concrete operations and flow process control that Content Management is relevant comprise content adding, content synchronization, content update, content unloading, content route etc.
Illustrate the scene that a content distribution policy is carried out below.
Suppose the whole nation certain focus film that had only the part of nodes buffer memory in all CDN POP points, all the other nodes do not have this film of buffer memory.When (this time period threshold value can dispose) in certain continuous time period constantly not in the node of this film of buffer memory the visit capacity to this film surpass a pre-set threshold, the content management engine 204 that is arranged on so in some nodes will be judged as the focus film to the content that surpasses the visit thresholding, and comprise the steps:
The first step, content management engine 104 reports the CDN business management system with this judgement;
CDN business management system 105 at first regulative strategy is searched unit 104, searches this locality and whether has had this strategy, if exist then do not need the newly-built equipment configuration module 107 that directly is issued to CDN network management system 106; If there is no, then by the single triggering of worker calling to newly-built policy module 101 in the policy library;
It more than is automatic trigger process, also can adopt manual triggers, for example: the keeper can be as required directly to issue the worker by CDN business management system 105 to center policy library or facility strategy storehouse single, trigger policy foundation, strategy modification, strategy deletion, and the flow process that strategy is issued.
Second step, newly-built policy module 101 regulative strategy masterplates, establishment is with the strategy of this film PUSH initiatively to each node;
The strategy masterplate just is based on policy definition (PDL) masterplate of XML, the attribute of pre-defined strategy, form in the present embodiment.When the newly-built strategy of needs, form policy script according to this masterplate.
This film initiatively PUSH carries content distribution policy information in the strategy of each node, wherein, content distribution policy information comprises content identification, POP point, priority etc.
In the 3rd step, the equipment configuration module 107 that is issued to CDN network management system 106 by the policy distribution module 108 in the policy library is carried out this strategy.
Strategy in the policy library of center by with the interface in facility strategy storehouse, the address implementation strategy in the facility strategy storehouse that sends of strategy issues as required.
More than be that example describes with newly-built strategy, the modification of strategy and deletion flow process are similar with process, revise if desired strategy then call revise policy module, deletion strategy then calls deletion strategy module execution corresponding modification or deletion action if desired.
Above-mentioned process description content be judged as focus automatically and generate and carry out the process of content distribution policy.It is to initiate the propelling movement that content dispense request (carrying content distribution policy) is carried out the focus content by the CDN management system that the focus content is pushed to all nodes.
Fig. 2 has illustrated that strategy is that the process how to produce is the process of judging the focus content in the above-mentioned example and producing strategy.Fig. 3 has illustrated that tactful implementation is the flow process that the content in the above-mentioned example pushes.Wherein,
GCM: overall route management system, be responsible for the overall Content Management of CDN network, safeguard the content directory database of the whole network.Be positioned at national centre, belong to overall equipment.
LCM: local content manager.LCM is in charge of local contents directory, generates and carry out local content strategy, and carries out the dynamic process of content information.The content strategy that national centre assigns is distributed to node device and is carried out, and policy execution result is reported national administrative center GCM behind node after being resolved by LCM.LCM belong to node device and Cache, node manager all physical department be deployed in the CDN node.
Referring to shown in Figure 3, after following surface analysis adopted the present invention once, film PUSH initiatively was to the realization based on the content distribution flow of strategyization of each node and content source IP address change.
Step 301, CDN management system requested GCM (overall Content Management System) finishes the content distribution, carries distribution policy information (content ways of distribution, distribution scope, time of distributing requirement etc.);
Step 302, GCM notice LCM (local Content Management System) obtains content (content identification, content source address);
Step 303, LCM is according to Cache resource distribution situation, and notice Cache obtains content;
Step 304, Cache obtains content from content source;
Step 305, Cache obtains success to the LCM returned content;
Step 306, LCM upgrades local contents directory, and obtains success to the GCM returned content.
Step 307-308, GCM update content catalogue, and to the successful OK message of CDN business management system transmission expression.
The change of the propelling movement of focus content and content source IP address is carried content distribution policy by the content dispense request and is carried out, and therefore for the propelling movement of focus content and the change of content source address, only needs the strategy of content distribution to realize based on the strategy method.
Description of the invention is in order to provide for the purpose of example and the explanation, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the present invention's design is suitable for special-purpose.
Claims (10)
1. policy system of realizing content distributing network CDN Content Management, comprise CDN business management system and CDN network management system, it is characterized in that, Provisioning Policy storehouse system in the CDN network, comprise in this strategy base system: tactful generation unit is used to finish generation, modification and the deletion of strategy; Strategy is searched the unit, is used for carrying out strategy at policy library and searches;
Described strategy base system responds the triggering of described CDN business management system, by worker's simple form formula policy distribution is arrived described CDN network management system, resolves and carry out described strategy by this CDN network management system; And
Described strategy base system is divided into center policy library and facility strategy storehouse two-stage, and the center policy library is arranged in the CDN management system of national administrative center, and the facility strategy warehouse compartment is in the node manager of the backbone node of CDN network;
In the policy library of described center, define the strategy relevant, and policy distribution is arrived the facility strategy storehouse with Content Management;
The facility strategy storehouse, the management function that realizes individual node provides corresponding management interface for the CDN management system, be used to respond the triggering of described CDN business management system, by worker's simple form formula policy distribution is arrived described CDN network management system, resolve and carry out described strategy by this CDN network management system.
2. system according to claim 1 is characterized in that, described facility strategy storehouse comprises the content strategy server, is used for resolving the network parameter that is included in the content distributing network strategy, and carries out the configuration and the renewal of network parameter.
3. system according to claim 1 and 2, it is characterized in that, content management engine also is set in the node manager of the backbone node of described CDN network, is used to realize that concrete operations and flow process control that Content Management is relevant comprise content adding, content synchronization, content update, content unloading, content route.
4. system according to claim 1 is characterized in that described strategy base system also comprises the policy distribution module, is used for the policy distribution of the policy library equipment configuration module implementation strategy to the CDN network management system.
5. system according to claim 1 is characterized in that, described tactful generation unit comprises: be used for the newly-built policy module that strategy is set up, be used to revise the modification policy module of existing strategy, and be used for the deletion strategy module from the policy library deletion strategy.
6. system according to claim 1 is characterized in that, also comprises the tactful masterplate of formulating at Different Strategies in this strategy base system, and tactful masterplate comprises following one or more combination:
At content distribution policy, the mode of definition content source attribute and content distribution; Distribution policy has also defined the scope and the distribution flow of distribution;
At the content service strategy, the mode of definition content service, the flow process of content service for example, miss processing mode;
Content management strategy, the mode of definition Content Management comprises how content is upgraded;
At subscriber policy, definition is how according to user's information processing user request;
At the authentication and accounting strategy, how the service of definition VCDN authenticates, and authentication points where, and authentication mode;
At access control policy, defined the control that how to conduct interviews.
7. strategy method that realizes content distributing network CDN Content Management, be applied to comprise the CDN network of CDN business management system and CDN network management system, it is characterized in that, this content distributing network also comprises strategy base system, comprise in this strategy base system: tactful generation unit is used to finish generation, modification and the deletion of strategy; Strategy is searched the unit, is used for carrying out strategy at policy library and searches;
Described strategy base system is divided into center policy library and facility strategy storehouse two-stage, and the center policy library is arranged in the CDN management system of national administrative center, and the facility strategy warehouse compartment is in the node manager of the backbone node of CDN network;
In the policy library of described center, define the strategy relevant, and policy distribution is arrived the facility strategy storehouse with Content Management;
The facility strategy storehouse, the management function that realizes individual node provides corresponding management interface for the CDN management system, be used to respond the triggering of described CDN business management system, by worker's simple form formula policy distribution is arrived described CDN network management system, resolve and carry out described strategy by this CDN network management system, and comprise the steps:
The CDN business management system triggers tactful calling in the policy library by the worker is single, and this strategy is issued to the equipment configuration module implementation strategy of CDN network management system by the policy library generation strategy.
8. method according to claim 7 is characterized in that, described facility strategy storehouse comprises the content strategy server,
This content strategy server parses is included in the network parameter in the content distributing network strategy, and carries out the configuration and the renewal of network parameter.
9. method according to claim 8 is characterized in that, at each node content management engine is set also, realizes that concrete operations and flow process control that Content Management is relevant comprise content adding, content synchronization, content update, content unloading, content route.
10. method according to claim 7, it is characterized in that, described CDN business management system also comprises before the calling of strategy in the policy library by single triggering of worker: be arranged on content management engine in the node and judge and need carry out new configuration, report the CDN business management system.
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| CN101998456A (en) * | 2009-08-21 | 2011-03-30 | 中兴通讯股份有限公司 | Self-organization network parameter configuration control method and parameter modification control system |
| CN103188294A (en) * | 2011-12-28 | 2013-07-03 | 百度在线网络技术（北京）有限公司 | Deleting method and deleting system for distributed cache |
| CN103312629B (en) | 2012-03-09 | 2018-02-27 | 深圳市腾讯计算机系统有限公司 | A kind of CDN flow allocation methods, equipment and system |
| CN103379512A (en) * | 2012-04-20 | 2013-10-30 | 中兴通讯股份有限公司 | WLAN network user strategy distribution device and method |
| CN103875227B (en) | 2012-09-12 | 2017-11-24 | 华为技术有限公司 | Business datum method for caching and processing, equipment and system |
| CN103731404B (en) * | 2012-10-12 | 2016-12-28 | 北京百度网讯科技有限公司 | Data access method based on CDN, system and device |
| CN103001955B (en) * | 2012-11-22 | 2017-05-31 | 南京中兴软件有限责任公司 | Method and system, the maintaining method and device of service condition that service downloading accelerates |
| CN103457763B (en) * | 2013-08-15 | 2016-12-28 | 中电长城网际系统应用有限公司 | Multi-channel information distribution method based on strategy and system and automatization's operation platform |
| CN103905527A (en) * | 2014-03-05 | 2014-07-02 | 深圳市同洲电子股份有限公司 | Content distribution method, related equipment and related system |
| CN106713015B (en) * | 2016-12-07 | 2019-06-04 | 武汉斗鱼网络科技有限公司 | A kind of method and server of scheme test |
| CN109218362B (en) * | 2017-07-03 | 2021-01-15 | 中国移动通信有限公司研究院 | Internet content distribution method, device and system |
| CN107450974A (en) * | 2017-08-15 | 2017-12-08 | 北京云端智度科技有限公司 | A kind of method of tasks carrying management in CDN system |
| CN109617713A (en) * | 2018-11-26 | 2019-04-12 | 网宿科技股份有限公司 | The implementation method and server of resource dissemination |
| CN111342996A (en) * | 2020-02-03 | 2020-06-26 | 杭州迪普科技股份有限公司 | Centralized control center system and method |
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