Self Adjustable Negotiation Mechanism for Convergence and Conflict Resolution of Replicas in Data Grids

Abstract

In order not to be limited in term of calculation, storage and communication, the concept of grid, which does not cease evolving, makes it possible to offer a practical operation of work unified as well as a great storage and computing power. To manage the division in the data grid, technical replication is used, but in spite of their advantages, the competitor access to the data could involve inconsistencies, from where the great challenge to ensure the consistency management between replicas of object. In this article, we describe model double-layered adapted to the applications on a large scale and which represents the support of the hybrid approach of consistency management of replicas based on pessimistic and optimistic approaches. This hybrid approach present an adapted mechanism based on the various negotiation forms between virtual consistency agents to be able to reduce the number of conflicts between replicas in data grids.

Optimization of Replica Consistency and Conflict Resolution in Data Grid Environment

“…Experimental results proved that time of communication among the sites for achieving consistency has reduced substantially; the effectiveness of consistency management has increased and model provide resistance and adaptively to changes in large systems. Further, the model is enhanced by introducing the economic approach which uses English and Dutch auction methodology for resolving the conflicts among the replicas (Belalem et al 2009).…”