Predictive elastic replication for multi-tenant databases in the cloud

摘要

Cloud computing is a trend of technology aimed at providing on-demand services with paymentrnbased on usage. In order to improve the use of resources, cloud providers adopt multi-tenantrnapproaches, reducing the operation cost of services. Moreover, tenants have irregular workloadrnpatterns, which impacts in guarantees of quality of service, mainly due to interference amongrntenants. This paper proposes PredRep, a predictive approach to characterize the cloud databasernsystem workload and automatically provide or reduce resources by replication techniques. Inrnorder to evaluate PredRep, some experiments that measure the quality of service and elasticityrnare presented. Our experiment results confirm that PredRep reduces cost and SLA violations.