摘要
提出了一种应用于内容中心网络的缓存策略,对高热度内容进行分布式缓存,允许缓存节点之间协作,保证热度高的内容在缓存中生存更长的时间,并在内容请求过程中利用跟踪节点实现缓存内容的定位,允许内容请求用户从网络中参与协作的缓存节点获取被请求内容的不同部分,达到分布式缓存协作的目的,提高网络中缓存资源的利用率,降低内容请求用户获取内容的时间.仿真结果表明,该策略能有效减少网络的平均时延.
A distributed cooperative caching strategy was proposed for content-centric networking, in which the popular contents can be cached and the distributed cooperation is allowed within the cache nodes to ensure a longer sojourn period of caching. By utilizing the tracker node, the location of cached contents can be found during the content request process. Moreover, the content requesters can acquire the contents from all cache nodes that participate in the cooperation to achieve the goal of distributed co- operative caching, so as to improve the utilization of cache resources in the network, and to reduce the average time of acquiring contents for the requesters. Simulation shows that the proposed strategy can re- duce the average round trip time in the network effectively.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2015年第2期98-103,共6页
Journal of Beijing University of Posts and Telecommunications
基金
国家重大专项项目(2011ZX03001-007-03)
关键词
内容中心网络
缓存
协作缓存
内容定位
content-centric networking
cache
cooperative caching
content locating
