Data mobility in peer-to-peer systems to improve robustness

  • Authors:
  • Hugo Pommier;François Bourdon

  • Affiliations:
  • GREYC Laboratory - UMR 6072, University of Caen Basse-Normandie, Caen CEDEX, France;GREYC Laboratory - UMR 6072, University of Caen Basse-Normandie, Caen CEDEX, France

  • Venue:
  • AP2PC'08 Proceedings of the 7th international conference on Agents and Peer-to-Peer Computing
  • Year:
  • 2008

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Abstract

In this paper, we present the design of a robust decentralized peer-to-peer (P2P) platform for data storage. We use Fragmentation Redundancy and Scattering (FRS) mechanism on a file to provide fault tolerance capability, and information availability. To build a fully decentralized system, we consider each fragment of information as an autonomous bio-inspired agent capable to choose his own place of storage (to move from a peer to another peer). To reconstruct a file we have to gather a subset of fragments (defined by a minimal threshold to reconstruct the entire document), thus we have implemented flocking rules to maintain a swarm of fragments. These simple local rules allows us to find just one fragment to steer the whole flock towards a peer in the network. Another issue is the use of all network capabilities. We show in this paper how the flock mobility (based on pheromones) can provide the load distribution, while avoiding suspicious peers.