计算机应用
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闻炳海 周继鹏
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Bing-Hai Wen Ji-Peng Zhou
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摘要： 通过将De Bruijn和Ring相结合，提出了一种新的常数度的DBR图（节点出度和入度均为2）。将DBR图应用到动态网络，设计并实现了常数度的P2P系统Tangram。Tangram的设计基于分布式哈希表，是一个可扩展的、完全无中心的和自组织的结构化P2P系统。对于节点规模为N的Tangram系统，路由表大小为O(1)，平均的路由步数是O(log N)，在路由表大小和路由步数之间达到了很好的平衡。通过模拟网络的实验表明，Tangram系统是稳定而高效的。
关键词: 对等计算, 常数度, 分布式哈希表, 覆盖网络
Abstract: This paper proposed a new constant-degree graph, DBR, which combined De Bruijn and Ring and kept 2 in-degrees and 2 out-degrees of a node. Adapting DBR to the dynamic network, we designed Tangram with constant-degree. Tangram was based on DHT. It was a scalable, completely decentralized and self-organizing structured P2P system. The routing algorithm of Tangram was composed of De Bruijn algorithm and Chord algorithm and achieved a time complexity of O(log N) per lookup request by using O(1) neighbors per node, where N was the network size. Experimental results show that Tangram is efficient.
Key words: peer-to-peer, constant-degree, dht, overlay network
闻炳海 周继鹏. 基于DBR图的常数度P2P系统[J]. 计算机应用.
Bing-Hai Wen Ji-Peng Zhou. New constant-degree P2P system based on DBR[J]. Journal of Computer Applications.
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链接本文: http://www.joca.cn/CN/
http://www.joca.cn/CN/Y2009/V29/I1/34
