CN203014859U - Intelligent bidirectional CDN system - Google Patents
Intelligent bidirectional CDN system Download PDFInfo
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- CN203014859U CN203014859U CN 201220557013 CN201220557013U CN203014859U CN 203014859 U CN203014859 U CN 203014859U CN 201220557013 CN201220557013 CN 201220557013 CN 201220557013 U CN201220557013 U CN 201220557013U CN 203014859 U CN203014859 U CN 203014859U
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Abstract
The utility model provides an intelligent bidirectional CDN system which at least comprises two or more cache server nodes, at least one routing control and distribution management center and at least two media server source nodes. Each of the media server source nodes at least is connected with a media system. The cache server nodes also can be directly connected with a media content description storehouse. The systems can be interconnected through a distribution network. The media server source nodes can be in connection and mutual communication, each of the media server source nodes can be connected with at least one cache server node 1, and the information exchange is carried out. The cache server nodes can be interconnected, a network node deployment that the media server source nodes and the cache server nodes are symmetric is achieved. In this way, a content source server can be a target receiving server too, and the content transmission between any nodes in the network can be realized.
Description
Technical field
The utility model belongs to CDN content distribution techniques field, and the utility model is comprised of the server zone that is distributed in zones of different, the intelligent two-way CDN system that relates to that the two-way distribution of content intelligence sends out
Background technology
Content distributing network is comprised of the server zone that is distributed in zones of different, and the virtual network of application layer services-application bearer network is provided.Its basic ideas are to avoid as far as possible might affecting on network bottleneck and the link of data transmission bauds and stability, make the faster, more stable of content delivery.By CDN, internet content is pushed to from the nearest place of user, thus raising user's experience, and saving backbone network resource-storage tape swapping is wide and QoS.
Content delivering system can improve the Web content distribution quality, and therefore the technology that reduces the backbone network traffic load and reduce the access load of program source is applied to IPTV system and digital television system.It is usually described storehouse, media store source, fringe node (media server), Distribution Control Center by media resource and forms.
The CDN service is used for route distribution, planning and the organize content storage of organising content.Preserve all program resources in central media center, each fringe node (media server) has the copy of popular current available program resource.
One deck intelligent virtual network on existing Internet basic that consists of by place node server everywhere at network, the CDN system can be in real time leads user's request on the nearest service node of user again according to the connection of network traffics and each node, load state and to integrated informations such as user's distance and response times.Its objective is to make the user can obtain required content nearby, solve the situation of Internet network congestion, improve the response speed of user's access websites.
The content that CDN can carry: Streaming Media, Web, file download etc.--become with application, but CDN uses and slightly lags behind application development, most CDN system carries out contents distribution from top to bottom, emphasis by the source contents distribution, rather than the mutual distribution between content.
That is, existing CDN system is unidirectional, can not realize the mutual distribution between content.
The utility model content
The utility model aims to provide a kind of method of adjustment and device thereof that can carry out accurate quick-adjustsing bottom surface flatness.
The two-way CDN of intelligence system can realize that Streaming Media acceleration, file transfer acceleration, application acceleration, web accelerate, make content delivery faster, more stable, can realize that the content between the all-network node transmits mutually, with content by rational strategy distribution to the nearest place of distance users, reach optimal response speed when making user's accessed content resource.
Compare with present content release model, the two-way CDN of intelligence system emphasizes that content maximizes the importance of sharing in network, namely distribute efficient, distribution intelligence and distribution amphicheirality, making each node is that the source is the destination, fundamentally solved the non intelligent CDN of traditional individual event system, extensively can dispose in Broadcasting Cable Network, the Internet, telecommunications network and play adaptability, look at present and reach the two-way CDN of intelligence system of section and be applied in actual items.For example, be applied to and covered Guangxi the whole province in Guangxi broadcast and television information network limited company CHINA RFTCOM Co Ltd, make a large amount of streaming media resource rationally distribution between 14 districts and cities of the whole district of Internet data center (IDC) platform of Guangxi broadcasting and TV, cover 5,000,000 digital cable customers, and satisfy multi-screen (TV screen, computer screen, mobile client screen) the end-user access content resource under the integration of three networks.
Technique effect
1, cover comprehensively
Almost can contain all circuits in net depending on reaching the two-way CDN of section intelligence system, realize the multiple spot redundancy on network configuration, can not break down due to any one node wherein, obtain less than content and cause the user to access unsuccessfully.
2, comprehensive management
Depending on reaching the two-way CDN of intelligence system of section to realize comprehensive network management, by monitoring management system, can monitor the running status of all nodes, guarantee network Qos, guarantee that network is in best running status.
3, intelligence is two-way
Each node in network is source node, has realized the polytropism of contents distribution, and the content that satisfies between node is mutually changed and transmits, and according to the different modes of intelligent strategy, realizes the load balancing of global network.By reference to the accompanying drawings, according to hereinafter illustrate that by example the description of the utility model purport can know other aspects of the present utility model and advantage.
Description of drawings
By reference to the accompanying drawings, by the detailed description of stating hereinafter, can more clearly understand above-mentioned and other feature and advantage of the present utility model, wherein:
The two-way CDN system architecture diagram of Fig. 1 intelligence;
Fig. 2 is the route control system Organization Chart;
Fig. 3 is fringe node network design figure;
Fig. 4 is the CDN+P2P system construction drawing.
Embodiment
Referring to the accompanying drawing that the utility model embodiment is shown, hereinafter the utility model will be described in more detail.Yet the utility model can be with many multi-form realizations, and should not be construed as the restriction of the embodiment that is subjected in this proposition.On the contrary, it is abundant and complete open in order to reach proposing these embodiment, and makes those skilled in the art understand scope of the present utility model fully.In these accompanying drawings, for clarity sake, may amplify size and the relative size in layer and zone.
The CDN system, a kind of for improving the Web content distribution quality, the technology that reduces the backbone network traffic load and reduce the access load of program source, applied to IPTV system and digital television system, usually described storehouse, media store source, edge C ache(video server by media resource), Distribution Control Center etc. forms.
In the utility model, the CDN system is two-way.The two-way CDN of intelligence system comprises two and above Cache servers node 1 at least, at least one route controls and distribution management center 2, at least two media server source nodes 3, each media server source node 3 connects a media system at least, and Cache servers node 1 can also directly connect a media content and describe storehouse 5.Those systems can be undertaken interconnected by distributing network.
See also Fig. 2, it is a route control system Organization Chart.Can connect between media server source node 3, intercommunication mutually, media server source node 3 also can be realized interconnected by dispatch server 6.And each media server source node 3 can connect at least one Cache servers node 1, mutually carries out information interaction.Also can carry out interconnected between Cache servers node 1, can reach between media server source node 3 and Cache servers node 1 is that symmetrical network node is disposed, like this, can think that content source server can be also the purpose reception server, can realize the delivery of content each other of arbitrary node in network thus.
See also Fig. 3, media server source node 3 can be connected with a plurality of Cache servers nodes 1 again, and Cache servers node 1 can also intercommunication.Each node that reaches thus in network is source node, has realized the polytropism of contents distribution, and the content that satisfies between node is mutually changed and transmits, and according to the different modes of intelligent strategy, realizes the load balancing of global network.
See also Fig. 4, media server source node 3 can be connected with a plurality of Cache servers nodes 1 again, and each Cache servers node can connect a plurality of users 1 time.
Specifically, shown in the two-way CDN system architecture diagram of Fig. 1 intelligence, the CDN service is used for distribution, the route of organising content resource and controls, worked in coordination with to record to set up by each Cache stores service node 1 and describe storehouse 5 by central content, by media system management of media source node resource dissemination to each edge C ache server (video or content server), because the edge C ache server that is two-way distribution CD N system also can be used as the source of media server to other edge C ache server distributing contents resource.
Fig. 2 is shown in the route control system Organization Chart, media server source node 3 provides content resource, the multiple ways of distribution of utilizing distribution management system with resource dissemination to each Cache servers node 1, realize caching resource, for the terminal use provides the focus access node, Cache servers node 1 is transferring content mutually, prevents due to the break in service of breaking down of some Cache servers nodes 1.
The terminal use can realize the local load balancing scheduling of resource to the 1 Gains resources service of edge C ache server node, also can realize the GSLB scheduling of resource by other edge C ache server node 1 and media server source node 3 Gains resources.
Fig. 3 is shown in fringe node network design figure, build the media server source node, then demand regional according to reality built the Cache servers node, for example: dispose intelligent two-way CDN system in provincial network, build Centroid and dispose one or more media server source nodes, according to demand at different districts and cities deployment Cache servers node or at emphasis coverage deployment Cache servers node.
Fig. 4 is shown in the CDN+P2P system construction drawing, after building media services source node 3 and Cache servers node 1, can realize local P2P technology at the local load balancing dispatcher-controlled territory, realize that the point-to-point reciprocity internet technique of P2P under intelligent two-way CDN system is disposed.
Disclose insufficiently for fear of content, below all parts is simply introduced.
1, CDN management system
The distribution policy management: distribution policy is for the distribution policy of CDN Web content, comprising: the application distribution of the contents such as Streaming Media, WEB, file download can be distributed to content source any one node in network;
2, contents distribution management:
1) pre-distribution
Pre-ways of distribution refers to that the central store server issues programme content to each Edge Server node, perhaps carries out the distribution of program between each Edge Server node, and it is the distribution of PUSH mode, namely initiatively distributes program to receiving terminal by distribution source.
The distribution that the space of 60%-80% in edge storage (the storage inside sum total of node cluster) in the VOD buffer memory is used for the focus file covers, remaining 20%-40% is used for dynamic focus to be copied, this is dynamic change, when edge storage less---node cluster is less, is used for doing the space that focus copies less.
Whole programs in the central store server or hot programs are uniformly scattered onto in node cluster on each node server as much as possible, can reduce like this pressure of backbone network.
When node cluster is larger, or central store program amount is when less, and what the storage of whole edge may occur is used for the spatial cache that scatters greater than all programs space of central store.That is to say that this node cluster can offer the ability that the user accesses any program.
When distribution space is not enough, when new hot programs issues, can trigger the action of mourn in silence in this node cluster of deletion program or low access degree program.
2) instant distribution
Instant distribution also claims distribution as required, namely adopts the mode of PULL to carry out the distribution of program, and when the Edge Server node needed each program, this station server can initiatively be asked for this programme content to central store server or other Edge Server node.System can adopt the mode of p2p to distribute, and also can obtain programme content from the central store server by the mode of IPSAN.
3) the focus displacement is when node cluster is smaller (normal conditions are all smaller), and general local covering power is smaller.When not having chlamydate program for order request this locality of user, generally work in coordination with by p2p, the mode of IPSAN provides service, perhaps provides service by Centroid.
The edge provides the program of service to add up to this mode, when number of times reaches certain thresholding, just need to carry out in node (group) inside the focus displacement, the program of unmanned or few people's program request deletion in the recent period in node (group), changes hot programs into.(being also like this for time shift program)
3, route control system
Intelligent dispatching system is responsible for terminal use's request automated intelligent is dispatched on rational application service equipment, and the content route realizes by SiteServer LBS
Content distributing server (CDN server) (NN Content Diliver Server-NCDS).This server is mainly used in synchrodata, carries out contents distribution, and is synchronous etc.
Media server (NN Media Server-NMDS): this server is used for the curstomer-oriented end provides media services, is namely content server, is also streaming media server (Cache servers).
This server of strategy dispatch server (NN Policy Server-NPSS) is redirected client requests to media server according to certain strategy for client-requested.
√ resource United Dispatching;
The √ client-requested is redirected;
Server daemon (NN Server Daemon).This server does not participate in the relevant affairs of media content, only is used for guarding above each server, can be in the operation of demons, and certain time period at the appointed time regularly restarts.
4, fringe node network
The fringe node network is the service provision point of intelligent two-way CDN system, provides service to all terminal equipments, and can realize arbitrary node is become the source.
Two, terminal use's service procedure
1), set-top box STB starts shooting and complete initialize process the user can obtain the content resources such as TS/FLV by HTTP mode Gains resources process prescription by http protocol, the below is take STB terminal access stream media video as example:; 2) the request EPG electronic navigation page; 3) feedback business; 4) content of program request, request scheduling; 5) feedback request; 6) (to media server, edge C ache server or media server source node) play in request; 7) finish playing.
Because should be understood that the utility model, those skilled in the art can realize not breaking away from spirit or scope of the present utility model with many other concrete forms.Although already described embodiment of the present utility model, the utility model should be understood and these embodiment should be restricted to, make within the utility model spirit and scope that those skilled in the art can define as appended claims and change and revise.
Claims (2)
1. the two-way CDN of intelligence system, it is characterized in that, at least comprise two and above Cache servers node, at least one route control and distribution management center, at least two media server source nodes, each media server source node connects a media system at least, the Cache servers node also directly connects a media content and describes the storehouse, and those systems can be undertaken interconnected by distributing network; Interconnect between the media server source node, each media server source node connects at least one Cache servers node, interconnects between the Cache servers node.
2. intelligent two-way CDN system as claimed in claim 1, is characterized in that, connects a plurality of users under each Cache servers node.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220557013 CN203014859U (en) | 2012-10-26 | 2012-10-26 | Intelligent bidirectional CDN system |
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| CN 201220557013 CN203014859U (en) | 2012-10-26 | 2012-10-26 | Intelligent bidirectional CDN system |
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| CN203014859U true CN203014859U (en) | 2013-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338272A (en) * | 2013-07-23 | 2013-10-02 | 星云融创（北京）信息技术有限公司 | Content distribution network and cache implementation method thereof |
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- 2012-10-26 CN CN 201220557013 patent/CN203014859U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338272A (en) * | 2013-07-23 | 2013-10-02 | 星云融创（北京）信息技术有限公司 | Content distribution network and cache implementation method thereof |
| CN103338272B (en) * | 2013-07-23 | 2016-08-10 | 星云融创（北京）科技有限公司 | A kind of content distributing network and cache implementing method thereof |
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Granted publication date: 20130619 |
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| CX01 | Expiry of patent term |