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Model Based Development of Quality-Aware Software Services

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4 Author(s)
de Miguel, M.A. ; Dept. de Ing. de Sist. Telemdticos, Univ. Politec. de Madrid, Madrid ; Massonet, P. ; Silva, J.P. ; Briones, J.

Modelling languages and development frameworks give support for functional and structural description of software architectures. But quality-aware applications require languages which allow expressing QoS as a first-class concept during architecture design and service composition, and to extend existing tools and infrastructures adding support for modelling, evaluating, managing and monitoring QoS aspects. In addition to its functional behaviour and internal structure, the developer of each service must consider the fulfilment of its quality requirements. If the service is flexible, the output quality depends both on input quality and available resources (e.g., amounts of CPU execution time and memory). From the software engineering point of view, modelling of quality-aware requirements and architectures require modelling support for the description of quality concepts, support for the analysis of quality properties (e.g. model checking and consistencies of quality constraints, assembly of quality), tool support for the transition from quality requirements to quality-aware architectures, and from quality-aware architecture to service run-time infrastructures. Quality management in run-time service infrastructures must give support for handling quality concepts dynamically. QoS-aware modeling frameworks and QoS-aware runtime management infrastructures require a common evolution to get their integration.

Published in:

Object Oriented Real-Time Distributed Computing (ISORC), 2008 11th IEEE International Symposium on

Date of Conference:

5-7 May 2008