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Peer-To-Peer (P2P) live streaming has become increasingly popular over the Internet. To alleviate the inter-ISP traffic load and to minimize the access latency, proxy caching has been widely suggested for P2P applications. In this paper, the authors carry out an extensive measurement study on the properties of P2P live streaming data requests. Their measurement demonstrates that the P2P living streaming traffic exhibits strong localities that could be explored by caching. This is particularly noticeable for the temporal locality, which is often much weaker in the conventional P2P file sharing applications. Their results further suggest that the request time of the same data piece from different peers exhibits a generalized extreme value distribution.
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