Optimal admission control for a QoS-aware service-oriented system

  • Authors:
  • Marco Abundo;Valeria Cardellini;Francesco Lo Presti

  • Affiliations:
  • DISP, Università di Roma "Tor Vergata", Italy;DISP, Università di Roma "Tor Vergata", Italy;DISP, Università di Roma "Tor Vergata", Italy

  • Venue:
  • ServiceWave'11 Proceedings of the 4th European conference on Towards a service-based internet
  • Year:
  • 2011

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Abstract

In the service computing paradigm, a service broker can build new applications by composing network-accessible services offered by loosely coupled independent providers. In this paper, we address the admission control problem for a a service broker which offers to prospective users a composite service with a range of different Quality of Service (QoS) classes. We formulate the problem as a Markov Decision Process (MDP) problem with the goal of maximizing the broker revenue while guaranteeing non-functional QoS requirements to its already admitted users. To assess the effectiveness of the MDP-based admission control, we present experimental results where we compare the optimal decisions obtained by the analytical solution of the MDP with other policies.