【摘要】 随着Web服务的迅猛发展,Web服务的高可用性已成为业界关注的一个新的焦点。作为一个新型的分布计算模型,Web服务有很多新的特点,所有这些新的特点对传统容错技术带来新的挑战。以如何提高Web服务的可用性为目标,对Web服务容错关键技术(包括体系结构、复制算法、失效检测以及日志和恢复)进行了详细分析。在此基础上针对Web服务的特点提出了需要解决的问题并给出解决思路。更多还原

【Abstract】 With the rapid development of Web services,the high usability of the Web service is becoming a new focus for research.As a new application model for decentralized computing,Web services have many new characteristics.All the characteristics bring the new challenges to the traditional fault-tolerant technology.With the aim of improving the usability of the Web service,this paper anatomized the key techniques of the fault tolerant Web services,including system architecture,replication algorithm,fault detection and log and recovery.On this foundation,it put forward the problems that need to be solved and gave the thinking to the characteristics of Web services.更多还原