Cooperative caching method and device

A collaborative caching and caching technology, applied in the network field, can solve problems such as local misses, delay increase, network congestion, etc., and achieve the effect of improving the local hit rate

Active Publication Date: 2011-05-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the caching strategy of each local server is not good, it will cause a large number of local misses, making users need to obtain the required video fragments from other local servers or the central server
This will generate a large amount of network traffic, which will not only increase the end-to-end delay between the server and the user, but also cause network congestion

Method used

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  • Cooperative caching method and device
  • Cooperative caching method and device
  • Cooperative caching method and device

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Embodiment Construction

[0026] In order to improve the local hit rate without increasing the cost of the local server, the embodiments of the present invention provide a method and device for cooperative caching.

[0027] Such as figure 2 As shown, the collaborative caching method provided by the embodiment of the present invention includes:

[0028] Step 201, according to the cache information in the cache table, the end-to-end delay between the local server and the neighbor server, and the popularity of the video fragments, the comprehensive income value of the cached video fragments and the value of the video fragments to be replaced on the local server are obtained. The comprehensive income value in .

[0029] In this embodiment, the cache table includes cache information, the end-to-end delay between the local server and the neighbor server, and the popularity of the video fragments, and the cache information includes the identification number of the video fragment and stores the Server infor...

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PUM

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Abstract

The embodiment of the invention discloses a cooperative caching method and a cooperative caching device, which relate to the technical field of networks and are used for improving local hit rate without increasing local server cost. The technical scheme provided by the invention comprises: according to caching information in a caching list, end-to-end delay between a local server and neighbor servers and popularity, acquiring the comprehensive income value of a cached video fragment and the comprehensive income value in the local server of a video fragment to be substituted; and when the comprehensive income value of the cached video fragment and the comprehensive income value in the local server of the video fragment to be substituted meet a substitution condition, substituting the video fragment to be substituted for the cached video fragment. The cooperative caching method and the cooperative caching device, which are provided by the embodiment of the invention, can be used in various network topologies such as tree-like topology and fully connected topology.

Description

technical field [0001] The present invention relates to the field of network technology, in particular to a method and device for cooperative caching. Background technique [0002] In a video-on-demand (Video-on-Demand, VoD) system, there are usually one or more central servers that store all video fragments that users are interested in, and some local servers with limited storage capacity are deployed on the central server around. Compared with the central server, these local servers are closer to the user side and can respond to user requests in a timely manner. When a user requests a certain video segment, the user first requests the content from the local server at its location, (a) if the local server has the content the user needs, the local server directly responds to the user's request, which is called (b) If there is no content required by the user on the local server, the local server will direct the user's request to other local servers or central servers that s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06H04L12/56
CPCH04N21/23106H04L67/2842H04N21/2225H04N21/237H04N21/24H04L29/08801H04N21/23116H04L67/568
Inventor 张洪波施广宇严哲峰陈双幸
Owner HUAWEI TECH CO LTD
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