基于混合内容分发网络的流媒体系统设计与实现  

Design and implementation of streaming media system based on mixed content delivery network

作　　者：江敏[1] 朱尚明[1] 党齐民[1] 

机构地区：[1]华东理工大学信息化办公室,上海200237

出　　处：《实验技术与管理》2011年第6期149-153,共5页Experimental Technology and Management

摘　　要：在大规模网络分发方面,内容分发网络(CDN)占据主导地位,可降低网络传输延时,但成本过高,可扩展性不强,而点对点(P2P)网络相比有明显的互补优势。在结合CDN与P2P技术互补的基础上,提出了一种在骨干网部署CDN、在区域网内部署P2P的混合分发网络,并给出了面向流媒体系统的设计与实现。性能测试表明,所提出的混和内容分发网络可有效减少骨干网流量,快速响应用户请求,并能解决区域P2P网内种子节点少而导致内容分发效率低下的问题。The content delivery network（CDN） is a dominant technology for the large-scale network delivery which can reduce the network transfer delay,but it has low expandability and high cost.Pear-to-Pear（P2P） network is a complementary technology with some advantages to CDN.The paper proposes a mixed delivery network based on CDN and P2P,which deploys the CDN in public backbone network and P2P network in local area.The application of mixed content delivery network in streaming media system is presented.The experimental performance shows that the mixed content delivery network can enormously reduce traffics over backbone network,make user request be responded quickly,and solve the problem that less seeds lead to the inefficient use of resources.

关 键 词：内容分发网络 点对点网络 流媒体 边缘代理服务器 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]