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클라우드에서 서비스 지향 응용을 위한 최적 서비스 배치와 우선순위 결정 기법
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- Issue Date
- 2014-09
- Citation
- 한국IT서비스학회지, v.13, no.3, pp.201-219
- ISSN
- 1975-4256
- Publisher
- 한국IT서비스학회
- Language
- Korean
- Type
- Journal Article
- Abstract
- This paper considers service deployment and priority optimization for multiple service-oriented applications sharing reusable services, which are deployed as multiple instances in the cloud. In order to handle variations in the workloads of the multiple applications, service instances of the individual reusable services are dynamically provisioned in the cloud. Also service priorities for each application in a particular reusable service are dynamically adjusted. In this paper, we propose an analytic performance model, based on a queueing network model, to predict the expected sojourn times of multiple service-oriented applications, given the number of service instances and priority disciplines in individual reusable services. We also propose a simple heuristic algorithm to search an optimal number of service instances in the cloud and service priority disciplines for each application in individual reusable services. A numerical example is also presented to demonstrate the applicability of the proposed performance model and algorithm to the proposed optimal decision problem.
- KSP Keywords
- Decision problem, Heuristic algorithm, Multiple Applications, Multiple instances, Optimal decision, Optimal number, Queueing network model, Service Deployment, Service priority, Service-oriented Applications, Sojourn time