流媒体代理缓存和预取方法的研究

代理缓存可以降低用户的启动延迟，减轻网络流量和服务器的负载，且在Web中也已广泛使用。但由于流媒体和非流媒体(文本，图像)有着显著的区别，目前，支持流媒体的代理缓存技术还面临着许多挑战。文中针对流媒体的数据量大和高带宽需求等特性，对支持流媒体的代理缓存和预取方法进行了总结。调研、分类、比较了目前已有的一些缓存算法和预取算法的优缺点，为下一步的研究提供启发和借鉴作用，同时指出将来的研究方向和热点问题。

Research of Proxy Caching and Prefetching for Streaming Media

The proxy caching mechanism is widely used in WWW systems,it offers low-delay data delivery and alleviates the network flow or server load by means of "proxy server".However,there is the distinct difference between streaming media and data(such as text,image).Also existing techniques for caching text and image objects are not appropriate for caching media streams.Due to the unique features of media objects like huge size and high bandwidth demand, this article surveys a number of proxy caching and prefetching schemes for streaming media. We investigate, classify and compare their advantages and disadvantages of the state-of-the-art solutions. Provide suggestion and reference for our further research.