Supporting Highly Manageable Web Services

摘要

This paper focuses on the management aspects of Web service provision. Theauthors argue that support for manageability has to be considered at the design stage if services are to be capable of delivering high levels of quality of service for their users. The authors categorize management issues into those concerning a site as a whole and those pertaining to individual services. The authors approach to site management supports the arbitrary distribution of services to machines, allowing the optimum cost/performance configuration to be selected. Service management issues may be generalized as supporting evolution, for example, supporting changes to the functionality, the presentation logic, and the overall look and feel of a service. The authors' approach, based on the separation of functionality and presentation, allows such changes to be performed on-line and ensures that updates are reflected consistency across the various pages of a service, or across services. This approach also facilitates the development of services that utilize dynamic content for service customizations, such as tailoring a service to match the profile of users.