特征相关的结构化P2P结点编址和数据副本分发

Feature-related Node Address and Replica Distribution over Structured P2P Networks

传统结构化P2P网络中,随机或顺序产生结点标识,结点分布与结点位置、安全性等特征间缺乏相关性,无法有效应对"错误相关"现象,存在数据丢失的风险。提出一种新的编址方法和相关联的副本分发算法,该算法将结点的位置、安全性等特征信息融入到结点标识中,使结点按特征分布,在副本分发过程中依据标识来识别结点特征,避开或靠近具有特定特征的结点,解决错误等问题,提高分发效率。仿真实验给出了改进后的结点分布和备份点选择结果,表明了方法的有效性。

In the traditional structured P2P network, node identifications are generated randomly or based on order. There is a lack of correlation between the features such as node distribution, node location, and safety. The phenomenon of ＂wrong correlation＂ cannot be dealt with effectively, and there is a risk of data corruption. A new node addressing method was proposed in this paper, together with its correlated replica distribution algorithm. By combining characteristic information such as location and security of nodes into node identification, the nodes can be distributed according to their features. According to these features, nodes can be avoided or approached during the replica distribution procedure. Based on this, problems such as ＂wrong correlation＂ are solved, and the distribution efficiency is improved. The node distribution and backup nodes selection result after improvement were given out in the emulation experiment, which shows the effectiveness of the method.