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Elastic Resource Allocation


The objective is to design and develop elastic resource allocation models. In fact, the allocated resources (on the provider side) should increase or decrease in accordance with the demand of services (on the tenants side), in order to maintain a QoS and to meet the SLAs (Service Level Agreement). The main criteria of QoS taken into account are the performance (e.g. query response time) and the availability of services (e.g. data availability) As for the SLA, a kind of provider-consumer contract, it specifies a set of constraints to meet and objectives to reach, in terms of performance or service availability. For the latter, it becomes important to design adaptive replication mechanisms taking also into account the economic cost constraints. The main challenge is to find the best trade-off between the tenants’ satisfaction in terms of QoS and the providers’ gain in terms of profitable resource management.