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2016 | OriginalPaper | Buchkapitel

Dynamic SLAs for Clouds

verfasst von : Rafael Brundo Uriarte, Francesco Tiezzi, Rocco De Nicola

Erschienen in: Service-Oriented and Cloud Computing

Verlag: Springer International Publishing

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Abstract

In the Cloud domain, to guarantee adaptation to the needs of users and providers, Service-Level-Agreements (SLAs) would benefit from mechanisms to capture the dynamism of services. The existing SLA languages attempt to address this challenge by focusing on renegotiation of the agreement terms, which is a heavy-weight process, not really suitable for dealing with cloud dynamism. In this paper, we propose an extension of SLAC, a SLA language for clouds that we have recently defined, with a mechanism that enable dynamic modifications of the service agreement. We formally describe this extension, implement it in the SLAC framework and analyse the impacts of dynamic SLAs in some applications. The advantages of dynamic SLAs are demonstrated by comparing their effect with that of static SLA and of the “renegotiation” approach.

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Metadaten
Titel
Dynamic SLAs for Clouds
verfasst von
Rafael Brundo Uriarte
Francesco Tiezzi
Rocco De Nicola
Copyright-Jahr
2016
DOI
https://doi.org/10.1007/978-3-319-44482-6_3