Adaptability in transaction oriented grid service

Adaptability is the ability of a system to adapt itself efficiently to changed circumstances. Adaptability in transaction oriented grid service is a challenge due to the extreme complexity and the occurrence of failures in the grid system. This paper presents the design, implementation, and evaluation of an adaptive model, ATOGS, using adaptive fault-tolerance (i.e., checkpointing and replication) during the execution of services. We evaluate our adaptive model experimentally comparing with the Dynasa and the experimental results have demonstrated that ATOGS enables the application itself to handle the failure problems efficiently and it achieves better performance in terms of execution time, network bandwidth, load, resulting in up to a lower overhead. The results indicate that the performance of transaction oriented grid service is better than the performance of general grid service when replication technique is used. This model is based on a modeling and simulation tool, Coloured petri nets (CPNs).