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VOD client terminal proxy caching server in digital family

A client proxy and cache server technology, applied in the field of digital home media server design, can solve problems such as ignoring the hit rate, streaming media occupying the cache, wasting cache resources, etc., and achieve the effect of overcoming network congestion and improving the hit rate

Inactive Publication Date: 2008-05-21
SUN YAT SEN UNIV
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AI Technical Summary

Problems solved by technology

Its shortcoming is that the hit rate is ignored, which will cause unpopular streaming media to occupy the cache for a long time, wasting precious cache resources
[0006] Based on the above research, this paper proposes a replacement algorithm based on weighted popularity, and formulates a new strategy to improve the network congestion and playback quality degradation caused by on-demand storms.

Method used

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  • VOD client terminal proxy caching server in digital family
  • VOD client terminal proxy caching server in digital family
  • VOD client terminal proxy caching server in digital family

Examples

Experimental program
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specific Embodiment approach

[0043] 1) When the time slice T arrives and a new media object passes through the cache proxy, first count the weighted popularity of all media objects in the current proxy, and see the technical solution for the specific calculation method.

[0044] 2) Then rearrange the priority of the media object, and judge whether the priority of the new media is higher than the lowest priority of the buffer summary media according to the priority, if it is lower than the lowest priority of the media in the cache, then do not cache its prefix, by The remote server directly provides the service. If it is higher than the lowest priority of the media in the cache, the prefix of the new media object will be replaced by the prefix of the lowest priority media in the cache, and the suffix of the lowest priority will be deleted from the hard disk. At this time, the execution tasks in the cache end.

[0045] 3) Then enter the hard disk part, first compare whether there is a suffix with a lower pr...

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Abstract

The purpose of the present invention is to overcome the deficiencies of the prior art, and propose a method for digital home VOD client buffer proxy server design. Through the replacement algorithm based on weighted popularity, an effective technical means and solution are proposed to solve the network congestion and broadcast quality degradation caused by on-demand storms. Compared with other methods of the same type, the present invention mainly lies in the design of the streaming media proxy caching strategy of the home VOD client proxy caching server, and proposes a streaming media proxy caching strategy based on weighted popularity. According to the level of the weighted popularity Pi of the present invention, we can know the current popularity of a certain streaming media more accurately, and can adjust the queuing priority of the streaming media in a more timely manner, which overcomes the problem of responding to explosive requests. The network congestion caused by sluggishness increases the hit rate of the response in the cached media and increases the total time required for the user to send a request to receive the response information.

Description

technical field [0001] The invention belongs to the field of digital home network and multimedia technology, and in particular relates to the design and realization of a digital home media server. Background technique [0002] Web caching technology is now one of the indispensable network technologies. Store the requested Web object (such as HTML page or image) on the proxy server between the remote server and the client, then the subsequent repetition of the Web object Requests can be served directly from the cache, thus reducing access time and saving important network resources. In order to improve the playback quality of streaming media, we can also introduce a proxy cache server at the end close to the client, and formulate a suitable proxy cache strategy. The cache space of the proxy server is limited. When the space is full, some data with low utilization must be removed to provide better services. The cache replacement strategy is used to decide which caches to rem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/173H04L29/06
Inventor 毛正华曹颖罗笑南
Owner SUN YAT SEN UNIV
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