Assessing the Dependability of SOAP RPC-Based Web Services by Fault Injection

“…To clearly show the performance of these strategies in erroneous networking conditions, fault injection techniques [7,8] are applied to generate faulty test cases. Table 6 shows the assessment result of the correct cases and the faulty cases under various strategies.…”

Section: Assessment Of Replication Strategiesmentioning

confidence: 99%

WS-DREAM: A distributed reliability assessment Mechanism for Web Services

Zheng

Lyu

2008

2008 IEEE International Conference on Dependable Systems and Networks With FTCS and DCC (DSN)

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“…Some faults exist in the original version, some faults are injected in the code [28], and some faults are injected in the system using fault injection techniques similar, for example, to those in [6], [29]. A number of faults may occur in the Web service environment [30].…”

Section: Experiments Setupmentioning

confidence: 99%

Developing Aerospace Applications with a ReliableWeb Services Paradigm

Chan

Lyu

2008

2008 IEEE Aerospace Conference

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Abstract-One of the latest achievements of the Internet usage is the availability of Web services technology. Web services provide an efficient and convenient way for service provisioning, exchanging and aggregating, which facilitates a resourceful platform for the aerospace industry. The aerospace industry usually involves products of complex synthesis of various technologies and sciences. These different technical resources can be provided in the form of Web services to increase their availability, efficiency and performance. However, in aerospace area, reliability is an ultimately important issue. In this paper, we target on providing a reliable Web service paradigm for the industry. We describe the methods of reliability enhancement by redundancy in space and redundancy in time, identify parameters impacting Web service reliability, and present a Web service composition algorithm. The replication algorithm and the detailed system configuration are described. The Web services are coordinated by a replication manager, which schedules the workload of the Web services and keeps updating the availability of each Web service. We also perform a series of experiments employing several replication schemes and compare them with a nonredundant single service to evaluate the reliability of the proposed paradigm. Finally, we also model the Web services with Petri-Net and Markov chains to demonstrate the performance and reliability of the Web services.

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“…Faults are injected in the system and the fault injection techniques are similar, for example, to the ones referred in [10]. A number of faults may occur in the Web service environment.The faults are also further divided into permanent fault (the server is down permanently once this fault occurs) and temporary fault (the fault only occurs randomly).…”

Section: Experiments Setupmentioning

confidence: 99%