SEDA4SC: A staged event-driven architecture for adaptive service computing runtime

The rapid development of web service technology brings up a number of crucial requirements for designing service computing runtime, such as supporting multiple message exchange patterns, switching among different transports, integrating various extended web service protocols and achieving robust performance under high concurrency. Based on staged event-driven architecture, we propose a novel architecture for an adaptive web-service-centric service computing runtime, named SEDA4SC. In SEDA4SC, the process of basic and extended web service protocols is divided into four primary event-driven stages to enable system independence and module isolation. Moreover, this architecture allows messages to be handled in two independent pipelines: the input pipeline and the output pipeline. Arbitrary message exchange patterns can be supported through a combination of the two pipelines. With SEDA4SC, we design and implement a service computing runtime system. The performance evaluation results show that our system exhibits robust performance under high concurrency.