Abstract: Streaming media content with enormous data quantity in IP network bring about more and more pressure for servers and skeleton network. Content delivery system plays a very important role in ensuring streaming media QoS. Through analyzing two kinds of new-style content delivery technologies, CDN and P2P, this paper puts forward multi-source reticulation hash P2P model and an ameliorated content caching algorithm, and designs a content delivery system based on combining CDN and P2P. The system can content conditions of more request and less request, and improves streaming media QoS.

Key words: content delivery network, netaork(CDN), P2P, streaming media, cache

摘要： IP网络中数据量巨大的流媒体内容使服务器和骨干网络承受的压力越来越大。内容分发系统对保证流媒体QoS起到至关重要的作用。该文通过分析内容分发网络(CDN)和P2P两种新型内容分发技术，提出了多源网状散列式P2P模型和一种改进的内容缓存算法，设计了基于CDN和P2P技术的内容分发系统。系统可同时满足请求多和请求少的情况，提高了流媒体QoS。

关键词: 内容分发网络(CDN), P2P, 流媒体, 缓存

CLC Number: 

• TP37