Designing Fault Tolerant Web Services Using BPEL

The Web services technology provides an approach for developing distributed applications by using simple and well defined interfaces. Due to the flexibility of this architecture, it is possible to compose business processes integrating services from different domains. This paper presents an approach, which uses the specification of services orchestration, in order to create a fault tolerant model combining active and passive replication technique. This model support fault of crash. The characteristics and the results obtained by implementing this model are described along this paper.