Research and Optimization of Content Search in Peer-to-Peer Network Based on Chord

In structured peer-to-peer network,how to find resources effectively is a key issue.Chord is a typical structured peerto-peer network model,it provides an efficient routing algorithm,however,it has low search efficiency because the limited information in routing table.A-Chord algorithm which based on Chord is proposed in this paper.A-Chord uses a new way to improve the routing table structure and modify the mechanism to find resources in Chord.Both the theoretical and experimental results show that A-Chord can reduce the average lookup path length to O(log5N) and improve the efficiency of resource discovery.