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针对P2P系统节点局部视图和用户查询不均衡的问题,提出一种用于超级节点网络的文件索引和数据双缓存技术.依据局部文件流行度统计,将用户感兴趣的资源索引缓存到本地超级节点,从而将单个节点视图扩展至全局;同时缓存拥有高访问率的远程热点文件,因此用户对热点文件的访问在本地即可获得响应.实验结果表明双缓存技术显著地提高了P2P系统的查询效率和数据传输速度,并可有效降低热点节点负载.
Aiming at the problem of unbalanced partial view and user query of P2P system nodes, this paper proposes a file indexing and data double caching technology for supernode network.According to the local file popularity statistics, the resource index of interest to the user is cached to the local supernode , So that the single node view can be extended to the global one.At the same time, the remote hotspot file with high access rate is cached, so the user can get the response to the hotspot file locally.The experimental results show that the double caching technology improves the query efficiency of P2P system significantly And data transfer speed, and can effectively reduce the hot node load.