Adaptive time-based coordinated checkpointing for cloud computing workfl ows

Cloud computing is a new benchmark towards enterprise application development that can facilitate the execution of workflows in business process management system. The workflow technology can manage the business processes efficiently satisfying the requirements of modern enterprises. Besides the scheduling, the fault tolerance is a very important issue in the workflow management. In this paper, we analyse and compare between some existing checkpointing strategies, then we propose a lightweight checkpointing adequate to the cloud computing and the workflows characteristics. The proposed strategy is an Adaptive Time based Coordinated Checkpointing ATCCp, it ensures a strong consistency without any synchronization. ATCCp uses the concept of soft checkpointing to minimize the storage time and it uses the VIOLIN topology to improve the checkpointing performances. According to the experimental results, our approach decreases the overhead and the SLA violations.