Web服务组合执行引擎中服务异步调用机制研究  

Study of service asynchronous invocation mechanism in Web composite services execution engine

作　　者：李玲勇[1] 高春鸣[2] 文华南[1] 

机构地区：[1]湖南师范大学数学与计算机科学学院计算机系,长沙410081 [2]湖南大学计算机与通信学院计算机系,长沙410082

出　　处：《计算机应用研究》2010年第2期558-562,共5页Application Research of Computers

基　　金：湖南省研究生科研创新资助项目(125000-4026);湖南省重大科技攻关项目(2006GK4034)

摘　　要：研究了BPEL4WS执行引擎WebJetFlow对Web服务的异步调用机制,在引擎的服务调用代理中对Web服务统一采用非阻塞双传输异步调用,提高了调用线程的利用率。同时引入了cache机制并设计了相应的cache替换算法,保证了引擎对异步调用结果消息的匹配效率以及数据安全性,通过实验验证引擎的性能有了明显的提高。This paper studied the Web services asynchronous invocation mechanism of the BPEIAWS engine WebJetFlow. It used the non-blocking-dual-channel asynchronous invocation to invoke the Web services in the service invocation proxy of the engine in order to improve the utilization ratio of the invocation threads. Also it imported the cache mechanism and designed an algorithm for cache substitution, thus it ensured the efficiency in matching the asynchronous results and data security. Finally, the experiment results demonstrate that the performance of the engine has been improved obviously.

关 键 词：WEB服务 BPEL4WS引擎 异步调用 CACHE机制 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]