Abstract
This paper introduces a dependability assessment tool (WSsDAT) for Web Services monitoring and testing. It allows users to evaluate dependability of Web Services from the point of view of their clients by collecting metadata representing a number of dependability metrics. This Java-based tool can be deployed in diverse geographical locations to monitor and test the behavior of a selected set of Web Services within preset time intervals. The graphical user interface of the tool provides real-time statistical data describing dependability of the Web Services under monitoring. The tool makes it possible for the users to identify typical patterns of dependability-specific behavior depending on the time of the day, days of the week or the client locations. In addition, WSsDAT can collect and analyze service dependability measurements during long periods of time, as well as obtaining dependability-related information about current service behavior. The paper reports on a successful series of experiments using this tool for investigating the dependability of two BLAST Web Services which are widely used in the bioinformatics domain. The paper shows how the tool can be employed by e-scientists in making informed choices of the distributed services being used in an in silico experiment and thereby improving their overall dependability.
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Li, P., Chen, Y., Romanovsky, A. (2006). Measuring the Dependability of Web Services for Use in e-Science Experiments. In: Penkler, D., Reitenspiess, M., Tam, F. (eds) Service Availability. ISAS 2006. Lecture Notes in Computer Science, vol 4328. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11955498_14
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DOI: https://doi.org/10.1007/11955498_14
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