DocumentCode :
1362623
Title :
Dynamic QoS Management and Optimization in Service-Based Systems
Author :
Calinescu, Radu ; Grunske, Lars ; Kwiatkowska, Marta ; Mirandola, Raffaela ; Tamburrelli, Giordano
Author_Institution :
Aston Univ., Birmingham, UK
Volume :
37
Issue :
3
fYear :
2011
Firstpage :
387
Lastpage :
409
Abstract :
Service-based systems that are dynamically composed at runtime to provide complex, adaptive functionality are currently one of the main development paradigms in software engineering. However, the Quality of Service (QoS) delivered by these systems remains an important concern, and needs to be managed in an equally adaptive and predictable way. To address this need, we introduce a novel, tool-supported framework for the development of adaptive service-based systems called QoSMOS (QoS Management and Optimization of Service-based systems). QoSMOS can be used to develop service-based systems that achieve their QoS requirements through dynamically adapting to changes in the system state, environment, and workload. QoSMOS service-based systems translate high-level QoS requirements specified by their administrators into probabilistic temporal logic formulae, which are then formally and automatically analyzed to identify and enforce optimal system configurations. The QoSMOS self-adaptation mechanism can handle reliability and performance-related QoS requirements, and can be integrated into newly developed solutions or legacy systems. The effectiveness and scalability of the approach are validated using simulations and a set of experiments based on an implementation of an adaptive service-based system for remote medical assistance.
Keywords :
health care; medical computing; optimisation; quality of service; software engineering; QoS management; QoSMOS; health care; optimization; remote medical assistance; service-based systems; software engineering; Analytical models; Markov processes; Optimization; Probabilistic logic; Quality of service; Scattering; Unified modeling language; QoS management; QoS optimization; Service-oriented software engineering; adaptive systems.;
fLanguage :
English
Journal_Title :
Software Engineering, IEEE Transactions on
Publisher :
ieee
ISSN :
0098-5589
Type :
jour
DOI :
10.1109/TSE.2010.92
Filename :
5611553
Link To Document :
بازگشت