Abstract: | Degree, diameter and congestion are important measures of distributed hash table (DHT) schemes for peer-to-peer networks. Many proposed DHT schemes are based on some traditional interconnection topologies and the Kautz graph is a topology with good properties such as optimal network diameter. In this paper, FissionE, a novel DHT scheme based on the Kautz graph, is proposed. FissionE is the first constant degree andO(logN) diameter DHT scheme with (1+o(1))-congestion. FissionE shows that the DHT scheme with constant degree and constant congestion can achieveO(logN) diameter, which is better than the lower boundΘ(N 1/d) conjectured before. The average degree of FissionE is 4 and the diameter is 2*log2 N, and the average routing path length is about log2 N. The average path length of FissionE is shorter than CAN or Koorde with the same degree when the P2P network is large scale. |