Building efficient super-peer overlay network for DHT systems

Authors:
Yin Li;Xinli Huang;Fanyuan Ma;Futai Zou
Affiliations:
The Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai, China;The Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai, China;The Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai, China;The Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai, China
Venue:
GCC'05 Proceedings of the 4th international conference on Grid and Cooperative Computing
Year:
2005

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Abstract

DHT technique has been widely applied in P2P systems because it provides reliable services. However, large overheads are inevitable for maintaining the topology of DHT overlay, which limits its application especially in highly dynamic network environments. This paper proposes a DHT based super-peer overlay network called SPChord in which peer nodes are clustered according to the session time and physical network locality. With an evolving process, SPChord gradually makes DHT overlay stable and reliable. Therefore the high maintaining overheads for DHT overlay are effectively controlled. Experimental results show that the DHT overlay maintaining overheads are reduced dramatically while the overlay stability and the data availability are also greatly improved.