CRAMP: Cost-efficient Resource Allocation for Multiple web applications with Proactive scaling

This paper presents a prediction-based dynamic resource allocation approach for web applications called CRAMP (Cost-efficient Resource Allocation for Multiple web applications with Proactive scaling). The proposed approach provides automatic deployment and proactive scaling of multiple simultaneous web applications on a given Infrastructure as a Service cloud in a shared hosting environment. It monitors and uses resource utilization metrics and does not require a performance model of the applications or the infrastructure dynamics. The shared hosting environment allows us to share virtual machine (VM) resources among deployed applications, reducing the number of required VMs. The approach is demonstrated in a prototype implementation that has been deployed in the Amazon Elastic Compute Cloud.