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Stationary and adaptive replication approach to data availability in structured peer-to-peer overlay networks

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3 Author(s)
Xuezheng Liu ; Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing, China ; Guangwen Yang ; DingXing Wang

Structured peer-to-peer overlay networks offer a novel infrastructure for large-scale applications. However, replications aimed for high data availability often have too much maintenance cost. In this paper we propose a simple and efficient replication strategy over low available peers, which has stationary replica locations and variation-tolerant data recovery mechanism, so that it can greatly reduce the costs for maintaining replicas, esp. in the circumstance of poor peer availabilities. We also present an analytic model for data availability and replication maintenance costs. Based on our model, we make adaptive mechanism for replicas checking, which can further reduce the cost and guarantee data availability in variable circumstance and conditions for living replicas. The simulation results proved the contribution of our approach and model.

Published in:

Networks, 2003. ICON2003. The 11th IEEE International Conference on

Date of Conference:

28 Sept.-1 Oct. 2003