An Architecture for the Dynamic Deployment of Web Services on a Grid or the Internet
Paul Watson, Christopher Fowler · 2005
This paper describes an architecture for dynamically deploying Web Services over a grid or the Internet. Distributed job scheduling systems are found at the heart of most grid computing infrastructures. They allow jobs (a combination of the code to be executed and (in many cases) the data on which it is to operate) to be created by clients and dynamically routed to available, remote computing resources for execution. In recent years, there has been a trend towards utilising Web Services to build grid and other distributed applications. An application is represented as a set of services that communicate through the exchange of messages. However, if the computational requirements of a service cannot be met by its hosting environment then a job must be created and sent to a distributed job scheduling system for execution on a suitable host. Therefore, application writers must deal with the complexity of managing two different types of computational entities: services and jobs. The Dynasoar project is investigating an alternative approach in which there are no jobs, but only services. A service can be dynamically deployed on an available host in order to utilise its computational power, if