Title: A design of policy-based composite web services QoS monitoring system

Authors: Gwyduk Yeom, Wei-Tek Tsai, Xiaoying Bai, Youngkon Lee

Addresses: Division of Mass Spectrometry Research, Korea Basic Science Institute 113 Gwahangno, Yuseong-gu, Daejeon 305-333, Korea. ' Computer Science and Engineering Department, Arizona State University, Tempe, AZ 85287-8809, USA. ' Department of Computer Science and Technology, Tsinghua University, Beijing, 00084, China. ' E-Business Department, Korea Polytechnic University, 2121 Jeongwangdong, Siheung City, Korea

Abstract: As the web service technology matures, research starts to focus on the composite web services that combine individual web services within an enterprise or between enterprises. Quality of service (QoS) is a critical competitiveness factor in this mature technology stage where there are many services with similar functionalities differing only in some non-functional properties. Monitoring is the key component for the service quality management of a web service. A service quality monitoring system design using a broker is presented in this paper. OWL-S is used to specify the composite service process and a service policy (inputs and outputs of each service, quality attributes and values, etc.) built by WS-policy is applied to the composite service process. If there is any discrepancy between the service policy and the monitored data, the service provider and the user are notified of it so as to take necessary measures. We have implemented a travel reservation system as an example of the presented design and the experimental results are shown. Average response time was monitored and the timeout policy was applied in the experiment.

Keywords: composite web services; quality of service; QoS monitoring; policy-based services; service quality management; average response time; timeout policy.

DOI: 10.1504/IJCCBS.2011.038951

International Journal of Critical Computer-Based Systems, 2011 Vol.2 No.1, pp.79 - 91

Published online: 11 Mar 2015 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article