Hierarchical Caching Mechanism Study for Content-Centric Network

Content-centeric Network (CCN) caching system, is a distributed caching system. In this paper, we propose a hierarchical CCN network cache placement policy. We define a layered network architecture, then define the concept of the value of a content cache, to build a network CCN hierarchical caching model.CCN distinguishs between different nodes on different layers of the cache space, .Through the hierarchical configuration node cache size and function space, the popularity of different content can be placed on different layers CCN nodes in different layers.So it improves the cache performance of the overall optimal cache performance in CCN.