Chinese Academy of Sciences
Peer-to-Peer (P2P) live streaming systems are becoming popular and are imposing a heavy burden on Internet Services Providers (ISPs). Proxy caching has been shown to be an effective means of reducing operation costs for ISPs. Although many caching algorithms for conventional web applications and P2P file sharing systems have been proposed and deployed, there have been few works on the caching for P2P live streaming. Data requests in P2P live streaming have distinct characteristics; for example, they are concentrated in a limited window which progresses rapidly with time in a monotonic mode.