P2P文件传输中网络资源搜索策略改进

Improvement of network resources search strategy on P2P file transfer

资源搜索和共享是P2P网络中重要的应用,进行高效资源的查询是提高系统效率、增强系统可扩展性的重要的技术问题。介绍了对等网络的基本特征和一些主要改进查询策略,同时分析了这些策略存在的问题,并在此基础上提出了一种基于资源路由表的缓存策略,最后对此方法进行模拟仿真,证明该策略可以有效地提高非结构化文件传输系统的效率及可扩展性。

Resource searching and sharing are very important application on peer-to-peer network, it＇ s an important technical problem that how to find and retrieve data. Efficient query processing relates to efficiency and enhance scalability of peer-to-peer system. In this paper, basic characteristics of the P2P and some main improved query strategy are presented.At the same time it analyzes their deficiencies,and then provides a new strategies-acaching strategy that based on resources routing table. At last the simulation is give, which can inrprove efficiency and scalability of unstructured file transfer system more effectively than other query strategies.