面向Web服务总线集成的分阶段优先级事件驱动架构

针对Web服务集成过程中分阶段事件驱动架构(SEDA)仅考虑服务集成架构的资源消耗,而对被集成的服务及由其构成的任务资源耗费考虑不足的问题,提出了分阶段优先级事件驱动架构(SPEDA).选取评价指标,通过熵权法对事件进行优先级评估,而在阶段内对优先级高的事件给予优先处理;使用非抢占式规则的排队系统构建集成任务资源消耗的数学模型,通过合理安排事件的优先等级来降低集成任务资源消耗.实验表明,SPEDA采用3个优先级别,其任务资源消耗比SEDA降低了18%,在考虑了优先级划分粒度的情况下,5个级别的集成任务资源消耗比3个级别的降低了21%.

Staged Priority Event Driven Architecture Oriented to Service Integration Resource Consumption in Web Service Bus

The staged event driven architecture(SEDA)only considers the resource consumption of integration architecture,while the consumption of integrated services and integration tasks (which are composed of the integrated services)is not fully considered during the web service in-tegration process.A staged priority event driven architecture(SPEDA)is proposed by estimating the priority of events with the entropy weight method under some special criteria.The high prior-ity events are early handled in stages.The task consumption is modeled in a queuing system with non-preemptive priority rule,and can be decreased by suitably arranging priorities endowed with estimation methods.Experiments and a comparison with SEDA show that the SPEDA decreases 1 8%resource consumption of tasks with 3 priority classes.When the size of priority classes grain is considered,a comparison with 3 priority classes shows that the SPEDA with 5 prioritv classes decreases 2 1%resource consumption of tasks.