Architecture for the Dynamic Deployment of Web Services on a Grid or the Internet

摘要

This paper gives an overview of work in the Dynasoar project, exploring an alternative architectural approach that removes the concept of jobs, and allows application and service writers and consumers to remain wholly within the service-based framework. Here, the equivalent to a job is the combination of a service, and a message sent to it for processing. To enable this approach, the architecture allows a service to be dynamically deployed on an available host in order to utilise its computational power, if no existing service deployments can meet the computational requirements. A key architectural feature is to make a clear separation between Web Service Providers, who offer services to consumers by advertising endpoints for them, and Host Providers, who offer computational resources. Separating these two components and defining their interactions makes it possible for them to be distributed over a grid or the Internet, and managed by different organisations.