An Efficient approach of Integrated file Replication and Consistency Maintenance In peer-to-peer systems

Peer-to-Peer is a decentralized system which is well known for its high scalability and reliability. So applications on a P2P system are used widely now days. For high system performance of this peer-to-peer file sharing systems, file replication and consistency maintenance are widely used techniques. These two techniques are intimately connected to each other. File replication needs consistency maintenance to keep the consistency between a file and its replicas, and on the other hand, the overhead of consistency maintenance is determined by the number of replicas. Connecting the two important components will greatly enhance system performance. Traditional file replication and consistency maintenance methods either are not sufficiently effective or incur prohibitively high overhead. To overcome these, IRM (Integrated file Replication and Consistency Maintenance inP2P systems) can be used which will achieve high efficiency at a significantly lower cost. Instead of passively accepting replicas and updates, nodes autonomously determine the need for file replication and validation based on file query rate and update rate. It guarantees the high utilization of replicas, high query efficiency and fidelity of consistency. IRM reduces redundant file replicas, consistency maintenance overhead, and unnecessary file updates.