Space allocation method for near-end cache server of popular movies based on CDN

Abstract

The invention discloses a method for distributing spaces of hot movies in a near-end cache server on the basis of a CDN. The method comprises the following steps of: aiming at a video on demand systemunder a wireless ubiquitous environment, firstly fitting practically acquired data to prove that an average daily user access volume of each movie obeys Poisson distribution; on such basis, carryingout interval estimation on a parameter of an average daily access volume Poisson model of each movie by means of a relation between the Poisson distribution and gamma distribution, so as to select a plurality of candidate movies; and comprehensively considering factors such as a storage space and a data transmission speed of a near-end server in the CDN so as to establish an optimization model, and solving the optimization model by utilizing software so as to obtain an optimum distribution strategy for cache spaces of the hot movies in the near-end server. According to the method, the problemsof network transmission bandwidth limitation, backbone network congestion, excessive source server loading pressure and the like caused by explosive increase of network business volume can be effectively solved, so that the user experience is enhanced.

Description

technical field [0001] The invention relates to a CDN-based server optimization caching strategy, in particular to a CDN-based method for allocating the space of a near-end caching server for popular movies. Background technique [0002] With the rapid development of communication and computer technology, wireless networks with different standards and complementary capabilities emerge in an endless stream, coexisting with smart terminals that are constantly updated, and together constitute a wireless ubiquitous environment with overlapping coverage. In this environment, people's demand for Internet applications has surpassed the stages of sending and receiving e-mails, transmitting pictures, browsing the web, and chatting online, and replaced them with a series of new user-oriented streams such as online games, IPTV, video conferencing, and video-on-demand. media services. The increasing number of new network multimedia applications has led to an explosive growth of network...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to propose a CDN-based space allocation method for popular movies in the near-end cache server for the video-on-demand system in the wireless ubiquitous environment, so as to effectively solve the problem caused by the explosive growth of network traffic. The problems caused by limited network transmission bandwidth, backbone network congestion, and excessive load pressure on source servers can improve user experience

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