基于Freenet系统副本管理的研究

Study on Copy Management Based on Freenet System

为了提高Freenet系统的搜索效率,以Freenet系统为基础,提出了选择最优节点下载文件,其余节点存储文件位置信息的方法减少副本的创建以便减轻系统负担。在维护一致性方面提出了以中心节点的方法维护系统副本的一致性,旨在减少更新文件时消息的传递,避免了盲目的洪泛广播算法。通过模拟实验,从文件请求成功率和平均更新消息数两方面,证明了算法的有效性。

In order to improve the searching efficiency of the Freenet system, we took the system as the foundation, and proposed that the optimum node should be chosen to download files and the rest of the node to store file information. In this case, file copies could be reduced and the system burden could be minimized. In the maintenance of consistency, we proposed to maintain the consistency of system copy by the central node, reducing the transmission of messages in file updating and avoiding the blind flooding broadcast algorithm. Simulation experiments of document request rate and average update number demonstrated the effectiveness of the algorithm.