非结构化P2P系统Overlay优化技术综述  

Survey of Overlay Optimization Techniques in Unstructured P2P Systems

作　　者：黄宇[1] 金蓓弘[2] 

机构地区：[1]中国科学技术大学计算机科学与技术系,安徽合肥230027 [2]中国科学院软件研究所软件工程中心,北京100080

出　　处：《小型微型计算机系统》2008年第2期238-244,共7页Journal of Chinese Computer Systems

基　　金：国家“九七三”重点基础研究发展计划基金项目(2002CB312005)资助

摘　　要：非结构化P2P Overlay网络的结构松散,网络中资源的分布没有明确的限制,这使得非结构化P2P Overlay网络中的资源搜索在很大程度上依赖于通信开销巨大的泛洪法,因而非结构化P2P系统在伸缩性,可用性等方面,存在明显的不足.非结构化P2P Overlay网络的上述特点决定了非结构化P2P Overlay优化技术的重要性.本文分四大类别,对非结构化P2P Overlay优化技术进行了介绍,分析比较了各类方法的优劣以及它们的适用场合,并在此基础上对未来工作进行了展望.Unstructured P2P systems have loose overlay structure and impose little control over the placement of resources in the overlay. Resource discovery in such systems mainly relies on flooding-based strategies, which greatly affects the system scalability and resource availability. The overlay optimization techniques are thus of great importance, to unstructured P2P systems ,mainly due to the characteristics of unstructured P2P overlays discussed above. This paper presents a survey on existing overlay optimization techniques for unstructured P2P systems. Detailed analysis of different overlay optimization techniques and comparison among the existing techniques are also presented, Based on the survey ,this paper also outlines future research directions.

关 键 词：非结构化P2P系统 Overlay优化 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]