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Modelling End-to-end Quality-of-Service for Transaction-Based Services in Multi-Domain Environments

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2 Author(s)
van der Mei, R.D. ; Center for Math. & Comput. Sci., Amsterdam ; Meeuwissen, H.B.

Next-generation service offerings will integrate information from multiple interconnected servers. For the commercial success of these services, the ability to deliver good end-to-end quality-of-service (QoS) is crucial. Today, no mature solutions exist for the problem of realizing high and guaranteed end-to-end QoS for transaction-based services in multi-domain environments. Service level agreements (SLAs) are a well-recognized concept to obtain QoS guarantees, but currently no satisfactory solutions exist for SPs to determine the set of combinations of per-domain SLAs that they need to negotiate with the other domain owners to deliver the desired end-to-end QoS. To this end, in this paper we introduce the new concept called SLA negotiation space, i.e. the set of combinations of per-domain SLAs that SPs need to negotiate with other domain owners to realize desired end-to-end QoS levels. In addition, to identify the SLA negotiation space, we propose a modelling framework to quantify the complex relation between the per-domain SLA parameters and the end-to-end QoS. The practical usefulness of our results is demonstrated by a realistic example

Published in:

Web Services, 2006. ICWS '06. International Conference on

Date of Conference:

18-22 Sept. 2006