摘要： 视频点播(Video-on-DemandVoD,)是现代网络上的一个重要多媒体应用。在传统的集中式视频点播系统中,如果用户数目过多,将会出现服务器I/O及网络带宽的瓶颈。而采用基于代理服务器的分布式体系结构,可以把系统的负载分布到放置在网络不同位置VoD的各个代理服务器上,能很好地解决系统瓶颈问题。阐述了基于代理的系统的特点、设计原则、以及设计的关键问题,并提出了一种基VoD于代理服务器的VoD系统模型。

关键词: 视频点播, 代理服务器, 分布式系统

Abstract: Video-on-demandVoD is one of the most important multimedia applications on modern network. In a traditional VoD system of centralized architecture, too many users may cause a bottleneck problem on the network path or the server's I/O system. However, in a proxy-based distributed architecture, the workload could be distributed among proxy servers placed in different locations of the network, and the bottleneck problem arisen in the centralized system could be well solved. In this paper, we describe the characteristics of the proxy-based VoD system, and issue the design requirement and key problems. And finally, we present an proxy-based VoD system model. ;;

中图分类号: 

• TN948.63