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A new approach to QoS driven service selection in service oriented architectures

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5 Author(s)
Cardellini, V. ; Dipt. di Inf., Sist. e Produzione, Univ. di Roma Tor Vergata, Rome, Italy ; Di Valerio, V. ; Grassi, V. ; Iannucci, S.
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Service selection has been widely investigated by the SOA research community as an effective adaptation mechanism that allows a service broker, offering a composite service, to bind at runtime each task of the composite service to a corresponding concrete implementation, selecting it from a set of candidates which differ from one another in terms of QoS parameters. In this paper we present a load-aware per-request approach to service selection which aims to combine the relative benefits of the well known per-request and per-flow approaches. We present experimental results obtained with a prototype implementation of a service broker. Our results show that the proposed approach is superior to the traditional per-request one and combines the ability of sustaining large volume of service requests, as the per-flow approach, while at the same time offering a finer customizable service selection, as the per-request approach.

Published in:

Service Oriented System Engineering (SOSE), 2011 IEEE 6th International Symposium on

Date of Conference:

12-14 Dec. 2011