Adaptive resource provisioning for read intensive multi-tier applications in the cloud

A Service-Level Agreement (SLA) provides surety for specific quality attributes to the consumers of services. However, current SLAs offered by cloud infrastructure providers do not address response time, which, from the user’s point of view, is the most important quality attribute for Web applications. Satisfying a maximum average response time guarantee for Web applications is difficult for two main reasons: first, traffic patterns are highly dynamic and difficult to predict accurately; second, the complex nature of multi-tier Web applications increases the difficulty of identifying bottlenecks and resolving them automatically. This paper proposes a methodology and presents a working prototype system for automatic detection and resolution of bottlenecks in a multi-tier Web application hosted on a cloud in order to satisfy specific maximum response time requirements. It also proposes a method for identifying and retracting over-provisioned resources in multi-tier cloudhosted Web...

• Type: Journal
• Year: 2011
• Where: FGCS
• Authors: Waheed Iqbal, Matthew N. Dailey, David Carrera, Paul Janecek
• Keywords: FGCS 2011, Multi-tier Web Application, Response Time, Web Applications