关键词: Gossip协议, 模糊理论, 非结构化P2P, 资源搜索, 副本技术

Abstract: Duplication technology is one of the common data-management mechanisms in P2P network. As nodes are highly dynamic in the P2P network, duplication management, which is worthy of being studied, is also required to be dynamic. It still remains a difficult problem of how to improve the searching efficiency in unstructured P2P network with the use of duplication technology. This paper probes into the duplication management policy and the Gossip protocol, which is widely used in unstructured P2P network, and proposes a strategy of node choosing to store duplications by using fuzzy theory. We demonstrate the improvements of the strategy on searching efficiency in P2P network through simulation experiments and the analyses of its data.

Key words: Gossip protocol, Fuzzy theory, Unstructured P2P, Resource searching, Duplication technology