IndexPeer：半结构化P2P系统资源发现模型及其DHT算法  

IndexPeer:semi-structured resource discovery model and its distributed hash table based search algorithm for P2P systems

作　　者：刘小虎[1] 蒋从锋[1] 李垦[1] 

机构地区：[1]华中科技大学工程计算与仿真研究所,武汉430074

出　　处：《计算机应用研究》2008年第6期1648-1651,共4页Application Research of Computers

基　　金：华中科技大学创新基金资助项目(HF04012006271)

摘　　要：提出了一种基于半结构化P2P系统的资源发现模型——IndexPeer模型。该模型采用三层索引结构,由下至上分别为virtual organization层、service peer层和indexpeer层。IndexPeer充分利用P2P系统中的节点性能差异,具有高效的查找功能,且对网络的高度动态性有良好的适应性。针对Index Peer模型的体系结构,对该模型的结构化层DHT算法进行了研究和设计。基于small-world的仿真实验表明,IndexPeer模型的体系结构及其结构化层DHT算法具有较好的鲁棒性和一定的可扩展性。This paper proposed a semi-structured resource discovery model——IndexPeer.IndexPeer was a hybrid hierarchical architecture consisting of three levels：virtual organization,service peer,and index peer from bottom to top.The architecture could bear high heterogeneity,high dynamicity,and high self-adaptivity in P2P system.It proposed a resource discovery mo-del based on DHT for IndexPeer.Simulations were run in a small-world network.The results show that IndexPeer is robust,sca-lable,and fault tolerant and can greatly improve the resource search efficiency.

关 键 词：分布式哈希表 点对点系统 索引 资源发现 搜索 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]