Selective Caching in Content-Centric Networking
Liu Wai · Chinese Journal of Computers · 2014
Addressing the well known challenges of current Internet,great expectations are held on Content-Centric Networking(CCN).In CCN,in-networking caching is the key difference from other Internet architectures,so the researching of efficient caching strategy becomes increasingly attractive but remains some great challenges.To address the disorderly caching of current caching strategy,this paper proposes a novel scheme—Selective Caching(SC).In SC, following the consumer's potential demand and the rise and fall of content popularity,content is cached only by some necessary nodes instead of all nodes on the content transmission path.At the same time,in accordance with the bandwidth-for-cache,content can be pushed to the adjacent node with more cache.We firstly propose a theoretical model to evaluate cache size consumed. Finally,we evaluate the proposed scheme through extensive simulation experiments in terms of a wide range of performance metrics.The experiment results show that our proposed scheme can yield a steady improvement of network performance and caching efficiency over diverse operating environments.At the same time,SC buys caching performance improvement with negligible overhead.