A Quorum-Based Protocol for Searching Objects in Peer-to-Peer Networks

  • Authors:
  • Ken Miura;Taro Tagawa;Hirotsugu Kakugawa

  • Affiliations:
  • -;-;IEEE Computer Society

  • Venue:
  • IEEE Transactions on Parallel and Distributed Systems
  • Year:
  • 2006

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Abstract

Peer-to-peer (P2P) system is an overlay network of peer computers without centralized servers, and many applications have been developed for such networks such as file sharing systems. Because a set of peers dynamically changes, design and verification of efficient protocols is a challenging task. In this paper, we consider an object searching problem under a resource model such that there are some replicas in a system and the lower bound of the ratio \rho=n^\prime /n is known in advance, where n^\primeis a lower bound of the number of peers that hold original or replica for any object type and n is the total number of peers. In addition, we consider object searching with probabilistic success, i.e., for each object search, object must be found with at least probability 0