多阶段可用性Web服务组合管理框架

A management framework with multi-stage availability for web services composition

为提高Web服务组合的可用性,更好地满足用户的服务需求,提出一种基于多阶段可用性的服务组合框架。该框架通过对可用性管理进行阶段划分,为每个阶段设定可用性的度量参数和度量方法,并从整个服务组合生命周期出发,以实现可用性的验证。相关实验表明,该框架能够尽早发现服务组合中存在的错误,降低服务错误对用户产生的影响。

In order to improve the availability of web service composition and to meet user＇s demand better, a composition framework with multi-stage availability is proposed. This framework divides the availability management into five stages, and sets the availability metrics and measurement methods for each stage. The availability can be validated from the entire life cycle of the composition service. Experiments show that this framework can find errors existing in the service composition as early as possible and thus reduce the impact on user caused by services faults.