TBFR: a threshold-based file replication approach for increased file availability and its formal verification
by Manu Vardhan; Dharmender Singh Kushwaha
International Journal of Information and Communication Technology (IJICT), Vol. 5, No. 2, 2013

Abstract: This work proposes an active replication mechanism, i.e., threshold-based file replication (TBFR) approach that replicates the file, from one node to the other node, when the total number of request for a particular file, reaches the threshold value. Significant performance improvement has been observed in terms of total number of interactions required for file replication and performance comparison of the TBFR has been carried out with the request reply (RR) and request reply acknowledgement (RRA) protocol. Results indicate that, the proposed approach reduces the number of messages exchanged for file replication by 33% to 55% and 25% to 50% in case when unnecessary file replication is avoided. With this approach service time is reduced by about 36% as compared to no replication. A relationship between the formal aspect of the static file replication and dynamic TBFR model is established using process algebraic approach for stability analysis of the proposed model.

Online publication date: Thu, 19-Dec-2013

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