Computer Science: Mediating Web Services for Dependability

摘要

The paper presents a novel approach to improving dependability of Web Service composition. The proposed architecture, called WS-Mediator, relies on an off-the-shelf mediator solution implementing run-time dependability monitoring and assessment, resilience-explicit computing and fault tolerance mechanisms used together to achieve dependable dynamic Web Service integration. We have implemented a Java WS-Mediator framework based upon the WS-Mediator concept, which can be easily integrated into Java Web Services applications. The paper reports results of the extensive experiments conducted in the context of the bioinformatics and virtual organization domains, which demonstrate the applicability of our approach.