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Research on Small World Model in P2P Networks

Peer-to-Peer (P2P) networks define a series of rules and applications, where peers are absolutely equal. Peers can both supply server to others and consume server from others. But the efficient data retrieval in a peer-to-peer system is a challenge problem, such as freenet, which aims to provide freedom of speech through a peer-to-peer network with strong protection of anonymity. Therefore, this paper designed an enhanced cache replacement method to improve the network. After simulations, it shows this method can increase the availability and decrease the average number of hops per request. Finally, this paper test the performance of Freenet with enhance cache replacement method in stimulate network environment. The results give a reference for research on P2P networks.