基于Chord的结构化对等网络资源搜索算法

A Chord Based Resource Querying Algorithm in P2P Network

在当前的分布式的网络环境下,如何提高数据资源的查询搜索效率是对等网络技术研究的关键内容和热点问题。在Chord网络规模比较小时,路由查找效率可以接受,但随着网络规模增大,查找效率变得不够理想。针对如何解决Chord网络中资源查找效率低的问题,本研究提出了一个新的E-Chord(基于Chord的扩展)模型。该模型主要是针对Chord中的路由表查找算法和路由表的结构进行扩展改进。经过一系列的理论分析验证,改进后的E-Chord模型和原Chord模型相比,资源查询效率得到明显的提高。

Under the current searching efficiency for data distributed network environment, resource is the key factor and hot how to improve the querying and spot of P2P network technology. When the Chord network scale is small, the routing querying efficiency is acceptable; but with the increasing of network scale, the querying efficiency becomes not ideal. For the purpose of solving the problem of low resource querying efficiency in Chord network, the new kind of E - Chord model （based on the expansion of Chord） is proposed in this study. This model mainly expands and re- forms the querying algorithm and the structure of routing table in Chord network. Through a set of theory analysis and simulation results, it is proved that compared with original Chord model, the re- formed E - Chord model has gained obviously improved resource ctuer~,in~ efficiency.