On the Efficiency of Collaborative Caching in ISP-Aware P2P Networks

Collaborative ISP caching has been advocated to reduce the otherwise significant amount of costly inter-ISP traffic generated by Peer-To-Peer (P2P) applications. The fundamental design criteria employed by ISP cache servers are, however, not well understood, with respect to dynamic P2P traffic patterns, ISP peering policies and cache server capacity constraints. In particular, there is a lack of investigations on the design and analysis of resource allocation mechanisms with awareness of inter-ISP traffic and ISP policies in the context of collaborative ISP caching - which is the focus in this study.