TBFR: a threshold-based file replication approach for increased file availability and its formal verification

  • Authors:
  • Manu Vardhan;Dharmender Singh Kushwaha

  • Affiliations:
  • Department of Computer Science and Engineering, Motilal Nehru National Institute of Technology Allahabad, Allahabad 211004, India;Department of Computer Science and Engineering, Motilal Nehru National Institute of Technology Allahabad, Allahabad 211004, India

  • Venue:
  • International Journal of Information and Communication Technology
  • Year:
  • 2013

Quantified Score

Hi-index 0.00

Visualization

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.