A survey on elastic resource allocation algorithm for cloud infrastructure

Abstract

Elasticity is an asset of cloud computing which makes it better or may be best over the other conventional grid and cluster computing. Cloud elasticity is the ability of the cloud infrastructure to rapidly change the amount of resources allocated to a service during runtime in order to meet the actual varying demands on the service while enforcing SLAs. Initially, elasticity being a key feature of clouds is classified based on Scope, Policy, Purpose and Method of elasticity. This completely explains where, how and why elasticity is crucial. Secondly, diversified related work to elasticity is reviewed and discussed in order to define the state of the art of elasticity in clouds. In this paper we have compared various proposed algorithm based on Quality of service and whether they support elasticity of not.