关键词: 内容中心网络, 缓存, 协作缓存, 内容定位

Abstract:

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 cooperative 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 reduce the average round trip time in the network effectively.

Key words: content-centric networking, cache, cooperative caching, content locating