The dynamic cache algorithm of proxy for streaming media

Abstract

The transmission streaming media becomes a challenging study problem for the Web application. The proxy cache for streaming media is an efficient method to solve this problem. In proxy cache, prefix cache is to cache the initial part of the streaming media in the proxy cache, so that there is no startup delay for the inquest of the clients. Segmentation based cache is to cache the length of streaming media, according to the inquest frequency of the clients so as to save the web resources; The proxy cache and the segmentation based cache are both pre-drawing cache methods. In this paper, we proposed the algorithm of high efficient dynamic cache method, based on prefix cache and segmentation based cache strategy. The algorithm carries out real time dynamic cache in the proxy cache and makes the dynamic cache with batch and patching algorithm, transmitted and proxy cached by the server, deal with the requests of more than one clients within a relatively short period of time. Therefore, the web resources used by patching channel and regular channel and release the network burden of the server. Event-driven simulation, introduced to evaluate this algorithm, is very efficient. © Springer-Verlag Berlin Heidelberg 2005.