Elastic Resource Allocation, Provisioning and Models Classification on Cloud Computing A Literature Review

Cloud Computing (CC) system faces new challenges every day, due to the complex structure of system clusters and high volume of data processed by the systems. The ability of acquiring resources in an elastic manner is considered as the primary rationale for adopting CC system. Elasticity mainly supports the facility to grow and shrink the virtual resources dynamically according to the requirement of cloud users. Elastic resource allocation plays a vital part in managing cloud resources efficiently according to user demands as well as cloud service provider's capacity. For gaining an efficient allocation of resource allocation in cloud, this paper has discussed the study of improving the load distribution and resource utilization with elasticity. However, literature shows that several works in CC and its benefits but there is a dearth of survey in analyzing detail about elasticity present in the cloud. This study has an attempt for fulfilling an existing available gap and introducing this survey based on adapting elasticity in CC. This paper has involved with various elasticity mechanism inclusive of definition, tools to measure, elasticity evaluation and existing elastic solutions with some issues faced. Finally, this paper has presented few open issues and new solutions. To the best knowledge, this study is novel to identify the issues faced in the model of elasticity solution using systematic review method.