An Optimized Cache Replacement Algorithm for Information-centric Networks

Caching is a core problem in Information Centric Networks (ICN) which can be considered as a network of caches. The design of effective caching algorithms involves a broad range of interrelated problems such as how to accurate predict the requests, and how to optimize cache replacement. In this paper, we develop a lightweight caching management algorithm motivated to maximize the traffic volume served from caches and minimize the bandwidth usage. The performance of this new scheme is far better than the previous strategies. Simulation results show that the proposed algorithms have better performance (e.g., about 60% better hit ratio and 30% less server messages) in both access latency and server bandwidth consumption than those in the existing schemes. The proposed algorithms can be easily implemented.