一种分层差异型P2P存储系统的设计与仿真

Design and Simulation of a Differential-Layered P2P Storage System

针对P2P网络存储系统中节点的复杂活动造成的可用性低的问题,提出了一种基于分层差异型P2P存储系统.通过将节点按照活动模式进行分层组织,来简化大规模节点组织的复杂性,并利用在线模式向量和访问模式向量来描述单个节点的可用性和访问模式,建立层状节点组织和差异型节点组织模型来保障节点的可用性.实验结果表明,该模型能够较好地解决高动态不可靠环境下的P2P网络存储系统节点可用性的保障问题.

In view of the problem of low availability caused by node＇s complex activity in the P2P network storage systems, this paper proposes a P2P storage system based on hierarchical differences. All the nodes are hierarchically organized according to their activity model to simplify the complexity of the large-scale organization. Moreover, the online pattern vector and access pattern vector are used to describe the individual node＇s availability and access pattern, and a hierarchical node organization and a difference node model are established to ensure the availability of the nodes. The results show that this model can be a good solution to resolving the node＇s availability security issues under the environment of high dynamic and uncertain P2P network storage system.