摘要
内容分发网络是一种以降低互联网访问时延为目的,在网络边缘或核心交换区域部署内容代理服务,通过全局负载调度机制进行内容分发的新型覆盖网络体系.随着多媒体网络流及实时交互技术的兴起,现今内容分发网络已成为互联网的核心应用之一.本文介绍了内容分发网络的演变过程与体系结构,深入剖析了内容分发网络的核心功能组件与工作机制,对当前主流内容分发网络进行分类,并讨论了内容分发网络性能度量,最后探讨了内容分发网络的未来挑战与进一步研究方向.
CDN（Content Delivery Network） is a novel overlay network,which deploys surrogates on the edge or backbone of network in order to reduce the access delay;it improves the efficiency of content delivery on the global load balance component.In current status,CDN has been a core Internet application as the development of multimedia and network technologies.In this paper,the evolution of CDN and its architecture are introduced;the key component of CDN and mechanism are presented;the taxonomy of CDNs and the performance measured strategies are reviewed.The developing trends of CDN and further topics in this area are also analyzed.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2013年第8期1560-1568,共9页
Acta Electronica Sinica
基金
国家863高技术研究发展计划(No.2011AA010705)
国家973重点基础研究发展计划(No.2011CB302605)
国家自然科学基金(No.61173145
No.60203021)
关键词
覆盖网络
内容分发网络
内容路由
负载均衡
性能测量
overlay network
content delivery network
content routing
load balance
performance measure
