A Cost-Effective Distributed File Service with QoS Guarantees

13 years 10 months ago

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Large-scale, value-added Internet services composed of independent cooperating or competing services will soon become common place. Several groups have addressed the performance, communication, discovery, and description aspects of these services. However, little work has been done on effectively composing paid services and the quality-of-service (QoS) guarantees that they provide. We address these issues in the context of distributed ﬁle storage in this paper. In particular, we propose, implement, and evaluate a cost-effective, QoSaware distributed ﬁle service comprising a front-end ﬁle service and back-end (third-party) storage services. Our front-end service uses mathematical modeling and optimization to provide performance and availability guarantees at low cost by carefully orchestrating the accesses to the back-end services. Experimental results from our prototype implementation validate our modeling and optimization. We conclude that our approach for providing QoS at low c...

Kien Le, Ricardo Bianchini, Thu D. Nguyen

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