Propound Solutions for Increase Fault Tolerance in Web Services Composition

Web Services Business Process Execution Language (WS-BPEL) provides the language to specify business processes that are composed of Web services as well as exposed as Web services.

In business processes and during service invocation, errors may occur from latent faults, e.g. partner services may not be available or not respond within time.[1]

We want to have reliable business processes hence we need to have reliable web services.

To have reliable web services fault occurrences should be prevented.

Objective of this paper is to present an architecture which ensures more reliable composed services. Therefore we propose an architecture which dynamically detect and recover failures using software fault tolerance patterns and mapping them to WS-BPEL .finally a Business Process is designed To implement attained proposition.

Matters to be considered during this study is :

• Dynamic Detect and recover failures.

• Discover similar web service from "web service discover component "and replace it with failed web service.

• Static Detect and recover failure types related to development phase.

• Using human interaction methods to avoid invalid fault tolerance strategy.