Journal article

Unequal-interval based loosely coupled control method for auto-scaling heterogeneous cloud resources for web applications

Zhicheng Cai, Duan Liu, Yifei Lu, Rajkumar Buyya

CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE | WILEY | Published : 2020

Abstract

Most existing quality of service (QoS) control algorithms of Web applications take into account Web Server or database connections which can be released immediately. However, many applications are deployed on virtual machines (VMs) or even Spot VMs elastically rented from public Clouds. To save costs, interval-priced VMs are not released until the ends of rented intervals. Such delays of control effects make existing methods rent or release excess VMs leading to overcontrol. Fluctuated prices make Spot VMs unreliable due to unexpected termination which makes fault-tolerant strategies crucial. In this article, an unequal-interval-based loosely coupled control method is proposed to improve the..

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Grants

Awarded by Fundamental Research Funds for the Central Universities


Awarded by National Natural Science Foundation of China


Awarded by Postgraduate Research and Practice Innovation Program of Jiangsu Province


Funding Acknowledgements

Fundamental Research Funds for the Central Universities, Grant/Award Numbers: 30919011235, 30920120180101; National Natural Science Foundation of China, Grant/Award Numbers: 61602243, 61702267, 61972202; Postgraduate Research and Practice Innovation Program of Jiangsu Province, Grant/Award Number: KYCX18_0434