Service-Oriented architecture is a developing method to creating distributed programs for flexible and dynamic architecture and is highly suitable for expanding the distributing systems. The use of this architecture has increased the design of software systems. Reliability is the main challenge of this architecture. The fault tolerance mechanism is one of the existing mechanisms for creating reliable services and failure rate measurement of the system is a challenge for fault tolerance. In this paper we propose a method named Service-Oriented SysFailRate Measurement for measuring the failure rate of the system in service-oriented architecture using fuzzy logic. In this system we used incomplete description of a service, lack of integration, incorrect format, and being out of the pre-determined time out factors to measuring the failure rate. Testing rests demonstrated that this approach is promising to significantly improve measuring the failure rate in Service-Oriented architecture.

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