VOD client terminal proxy caching server in digital family

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...

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.

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