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Measuring and Dealing with the Uncertainty of SOA Solutions

Lookup NU author(s): YUAN CHEN, Dr Anatoliy Gorbenko, Professor Alexander Romanovsky

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Abstract

The paper investigates the uncertainty of Web Services performance and the instability of their communication medium (the Internet), and shows the influence of these two factors on the overall dependability of SOA. We present our practical experience in benchmarking and measuring the behaviour of a number of existing Web Services used in e-science and bio-informatics, provide the results of statistical data analysis and discuss the probability distribution of delays contributing to the Web Services response time. The ratio between delay standard deviation and its average value is introduced to measure the performance uncertainty of a Web Service. Finally, we present the results of error and fault injection into Web Services. We summarise our experiments with SOA-specific exception handling features provided by two web service development kits and analyse exception propagation and performance as the major factors affecting fault tolerance (in particular, error handling and fault diagnosis) in Web Services.


Publication metadata

Author(s): Chen Y, Gorbenko A, Kharchenko V, Romanovsky A

Publication type: Report

Series Title: School of Computing Science Technical Report Series

Year: 2010

Pages: 31

Source Publication Date: November 2010

Report Number: 1225

Institution: Newcastle University

Place Published: Newcastle upon Tyne, UK


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