Research On P2P Searching Key Technology

In current networks, the application of P2P technology is universal; the research of P2P technology is more thorough, with the rapid message exchange, P2P searching method becomes important.Locating resource precisely is the premise of P2P exchange, and the efficiency of searching depends on the algorithm. Flooding Algorithm is based on unstructured P2P network, and DHT algorithm is also based on unstructured P2P network. People also improved previous theory continuously.This paper proposes a P2P searching algorithm based on small new world theory after researching P2P technology. The approach based on message similarity divides the nodes of random network into different domains according to message similarity. One domain has the similar nodes, and the super node will contains the related message about normal nodes. In searching messages, users match the keys with message vector of domain nodes. This approach converted searching of whole network into domain or adjacent domain searching, and returned the results of searching according to user interest value. The experiment indicates that the approach based on message similarity is valid.