基于CDN内容分发的研究与应用  

CDN-based Content Distribution Study and Application

作　　者：何锐[1] 李艳[2] 刘红[1] 

机构地区：[1]安徽大学计算智能与信号处理教育部重点实验室,安徽合肥230039 [2]山东电子职业技术学院,山东济南250014

出　　处：《通信技术》2011年第3期111-112,115,共3页Communications Technology

摘　　要：内容分发网络(CDN)技术是近年来在美国首先兴起并迅速发展起来的一种解决互联网性能不佳问题的有效手段。CDN系统能够实时地根据网络流量和个节点的联接、负载状况以及到用户的距离和响应时间等综合信息将用户的请求重新导向离用户最近的服务节点上以并提高互联网性能。简要讲述了CDN网络原理,从基于内容访问度和负载均衡的角度出发研究将信息资源推向网络边缘的内容分发策略问题,并提出主要分发策略的思想和算法。最后讲述了CDN在互联网中的实际应用。CDN technology,created and quickly developed in the USA in recent years,is an effective means in improving the performance of the Internet.Based on such information as network traffic,node connection,load status,distance to users and response time,the CDN system can steer the users＇ request to the nearest service node and thus improve the performance of the Internet.This paper briefs the priciple of CDN network.In addition, the dispatching policy for applying information resource to network edge is discussed from the angle of content access degree and load balance.Finally,some principal thoughts and algorithms of dispatching policy are proposed, including the practical application of CDN in the Internet.

关 键 词：内容分发网络 访问度边缘缓存 内容管理模块 

分 类 号：TN915.02[电子电信—通信与信息系统]