An adaptive fault-tolerant mechanism for Web services based on context awareness

Ning-jiang Chen, Pan Lin
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引用次数: 2

Abstract

Dependability and adaptability are both the important issues of Web services. With the consideration of the features of Web services, an adaptive fault-tolerant mechanism is presented. It is based on a two-aspect context model including functional context and network context. Based on the context model, the paper designs an adaptive fault-tolerant framework for Web services, which involves in a series of fault-tolerant technologies, including construction of a layered failure detection system, dynamically adjustable failure detection, and an adaptive service restarting process. The experimental results show the effect of the adaptive mechanism, such as reducing the unnecessary restarting operations and promoting the accuracy of failure detection.
基于上下文感知的Web服务自适应容错机制
可靠性和适应性都是Web服务的重要问题。考虑到Web服务的特点,提出了一种自适应容错机制。它基于两方面的语境模型,包括功能语境和网络语境。基于上下文模型,设计了一个Web服务自适应容错框架,该框架涉及到分层故障检测系统的构建、动态可调故障检测和自适应服务重启过程等一系列容错技术。实验结果表明,该自适应机制减少了不必要的重启操作,提高了故障检测的准确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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