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Nik Looker (BSc, PhD, MIET) - Former academic, daytime software engineer, full time astronomy nut
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Lunar Seas

Nik Looker (BSc, PhD, MIET) - Former academic, daytime software engineer, full time astronomy nut
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Increasing Web Service Dependability Through Consensus Voting

N. Looker, J. Xu, M. Munro “Increasing Web Service Dependability Through Consensus Voting,” presented at the 2nd International Workshop on Quality Assurance and Testing of Web-Based Applications, COMPSAC, Edinburgh, Scotland, July 25-28, 2005.

Abstract: This paper demonstrates our Web Service based N-Version model, WS-FTM (Web Service-Fault Tolerance Mechanism), which applies this well proven technique to the domain of Web Services to increase system dependability. WS-FTM achieves transparent usage of replicated Web Services by use of a modified stub. The stub is created using tools included in WS-FTM. Our initial implementation includes a simple consensus voter that allows generic result comparison. Finally we show, through the use of a non-trivial example, that WS-FTM can be used to increase the reliability of a Web Service system.

  • http://doi.ieeecomputersociety.org/10.1109/COMPSAC.2005.88

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