Web服务组合的容错管理  

FAULT-TOLERANT MANAGEMENT OF WEB SERVICE COMPOSITION

作　　者：胡蓉[1] 刘建勋[1] 

机构地区：[1]湖南科技大学知识处理与网络化制造湖南省普通高校重点实验室,湖南湘潭411201

出　　处：《计算机应用与软件》2010年第8期62-65,共4页Computer Applications and Software

基　　金：国家自然科学基金项目(60673119;90818004);湖南省教育厅项目(09K085)

摘　　要：Web服务有广阔的应用前景,得到了工业界和学术界的广泛关注。目前,将细粒度的Web服务按照用户需求或特定的业务逻辑进行合成,以完成更复杂的功能,是提高服务利用率的有效手段之一。然而,服务组合涉及多个主体和多种平台,难以保证其可用性和可靠性。针对服务组合的特点,分析了组合过程中可能出现的故障,构建了服务组合容错管理框架,提出了相应的容错策略、故障检测及容错实施方法,并通过仿真实验验证了该方法的有效性。Web Services have wide application prospects and have been attracted widespread concerns by the industry and academia. At present, many fine-grained Web Services are composed in accordance with user requirements or specific business logic in order to accomplish more complex functions, which is one of effective means of improving service utilisation rate. However, as the service composition involves a number of subjects and a variety of platforms, it is difficult to ensure its availability and reliability. In this paper, according to the characteris- tics of service composition, probable faults in composing process are analysed, the fauh-tolerant management framework of service composition is constructed,the respective fault-tolerant policy is prospect, and the methods of fault detection and fault-tolerant execution are presented. The efficiency of these approaches is proved through simulation experiments.

关 键 词：服务组合 容错 替换 重构 

分 类 号：TP[自动化与计算机技术]