Title: AN AGENT-BASED FRAMEWORK FOR ENHANCING THE AVAILABILITY OF WEB SERVICES

Year of Publication: 2012
Page Numbers: 183-196
Authors: Manoj Lall, John van der Poll, Lucas Venter
Conference Name: The International Conference on Computing, Networking and Digital Technologies (ICCNDT2012)
- Bahrain

Abstract:


Applications based on Web service technology have witnessed rapid growth in recent years. This may be attributed to maturity of a wide range of specifications developed to support more sophisticated applications. However, current Web service technology still has some shortcomings when it comes to being used in applications that require high availability of the services, for example, in mission critical systems. Although specifications such as WS- Reliability and WS-ReliableMessaging provide some guidance in this direction, they are not adequate. Approaches to provide high availability of Web services basically involve the use of replication mechanisms or the use of communities of Web services. This article highlights limitations of both these approaches and proposes a framework towards eliminating their inadequacies. We achieve this be making use of Cloud computing paradigm to improve on the availability of the underlying supportive infrastructure and the mobile agent paradigm to limit the effect of network disconnections. Furthermore, we evaluate our framework against the other frameworks that use the replication mechanism and the community of Web services to ascertain its effectiveness in addressing the availability issue.