GRM: a reliable and fault tolerant data replication middleware for grid environment

Existing approaches to replication based middleware suffers from performance limitations with the additional traffic in the Grid. Hence the proposed approach provides a replication middleware which offers highly efficient, consistent and fully replicated system for the Grid environment. This paper proposes a highly available fault tolerant Grid based replication middleware, which achieves replication of data dynamically upon incoming transaction request from the clients. The Grid based Replication Middleware (GRM) offers: Semi active replication strategy based on Total Ordering-Multicasting, SOAP based message communication, Dijkstra and Scholten election algorithm, improved Membership service and Hash based replica Location service to achieve high availability, heterogeneity, Fault tolerance, improved scalability, efficient data management services respectively and security features like authentication, authorization, message confidentiality are also addressed. Proposed GRM reduces the system overhead by reducing the traffic in the Grid and thereby improving the performance of data management for large scale complex Grid based applications.