QoS Assurance for Service-Based Applications Using Discrete-Event Simulation
The new paradigm for distributed computing over the Internet is
that of Web services. The goal of Web services is to achieve
universal interoperability between applications by using
standardized protocols and languages. One of the key ideas of
the Web service paradigm is the ability of building complex and
value-added service-based applications by composing preexisting
services. For a service-based application, in addition to
its functional requirements, Quality of service (QoS)
requirements are important and deserve a special attention. In
this paper, we introduce a discrete-event modeling approach for
service-based application. This approach is oriented towards QoS
assurance through discrete-event simulation.
Keywords: Web Services, Service-based applications, QoS
assurance, Discrete-event simulation
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