Research on Caching Mechanism Based on User Community

Abstract

This paper produced a data caching system framework based on two-layer Chord. Caching is shared by users in domain and hot accessing information is shared by inter-domain users. It effectively reduces the caching system’s overhead. We also introduced cache replacement algorithm based on the user community, especially the user’s influence in the community and the information flow dynamics. The result of simulation and experiment of test-bed environment shows the caching scheme based on user community outperforms most existing distributed caching schemes.