面向Web服务总线集成的分阶段优先级事件驱动架构  

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

作　　者：吴众欣[1] 韩彪[2] 钱德沛[1,2] 王永剑[2] 

机构地区：[1]西安交通大学电子与信息工程学院,西安710049 [2]北京航空航天大学计算机学院,北京100191

出　　处：《西安交通大学学报》2009年第12期16-20,共5页Journal of Xi'an Jiaotong University

基　　金：国家高技术研究发展计划资助项目(2006AA01A118;2006AA01A124;2009AA01Z144);科技部国际合作重点项目(2006DFA11080)

摘　　要：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%.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 integration 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 priority 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 18% 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 priority classes decreases 21% resource consumption of tasks.

关 键 词：服务集成 资源消耗 熵权法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]