Methods for effective and reliable resource allocation in service-oriented systems

Many life and infrastructure critical service-oriented systems require rigid compliance of their execution parameters values with the defined Service Level Agreement (SLA). In such systems reliable and proper execution of provided functionalities is an important part of their security assurance procedures. To meet these demands, the majority of system architects overprovision systems' infrastructures to ensure proper operability even during high load scenarios. In this article, a proposition of methods for effective and reliable resource allocation methods for service-oriented systems is proposed. The main foundation of this research lays in the user request processing procedure. This paper proposes a just-intime resource provisioning procedure for composite service with optimization methods ensuring proper resource allocation, compliance with the defined SLA and optimization of composite service delivery cost. The paper describes the concept of such request processing procedure, proposition of resource allocation methods and their experimental verification results.