Survivability-oriented self-tuning of web systems

Chen, Bihuan; Peng, Xin; Yu, Yijun and Zhao, Wenyun (2011). Survivability-oriented self-tuning of web systems. In: 20th International World Wide Web Conference, 28 Mar - 1 Apr 2011, Hyderabad, India.

DOI: https://doi.org/10.1145/1963192.1963205

URL: http://www.www2011india.com/

Abstract

Running in a highly uncertain and changing environment, Web systems cannot always provide full set of services with optimal quality, especially when the workload is high or failures in sub-systems occur frequently. It is thus desirable to continuously maintain a high satisfaction level of the system value proposition, hereafter survivability assurance, while relaxing/sacrificing certain quality/functional requirements that are not crucial to the survival of the Web systems. In this paper, we propose a requirements-driven self-tuning method for survivability assurance of Web systems. Using a value-based feedback controller plus a requirements-oriented reasoner, our method makes both quality and functional requirements tradeoffs decisions at runtime.

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