Web Services Autonomic Migration Framework

As a newly emerged OS-independent and language independent distributed computing platform, Web services has received more and more concerns and commercial deployment. Open source communities and leading companies saw a increasing number of service providers who began to use Web services as the new way to provide their services.Based on the existing mobile code technology such as mobile agent, this paper proposes a novel Web services autonomic migration framework and tries to provide a way that resources can be allocated most efficiently without human interference. Load balance and fault tolerance are the basic advantage of this framework. The research points included in this paper are as follows:First, a service based migration taxonomy is suggested as the way to define our migration framework in a larger extent. This definition makes it possible to compare our work with other existing research results.Then we provide the migration module definition. As the only part that can move across the entire framework, migration module needs a clear way to be distinguished with other part of the framework. This definition also separates our framework with the ordinary Web services. According to this definition, Web services developers can upgrade their traditional Web services to automatic migration Web services.Based on the above two definition, we implements a distributed migration management system with two kinds of migration condition supported. A load balance and fault tolerance supported Web services system can be built upon our framework. Security and efficiency are also carefully considered in our framework.At last, we propose a brand new Web services address lookup protocol to support the ever changing Web services addresses in the migration framework. Compared to existing specification such as UDDI which has a slow response time, our protocol is more efficient and flexible.As a prototype, Web services autonomic migration framework...