Service Differentiation and QoS in a Scalable Content-Aware Load Balancing Algorithm

This paper presents a complete solution of a scalable content-aware load balancing solution for cluster-based Web information systems that includes service differentiation and quality of service. The architecture is based on a farm of Web servers managed by a content-aware load balancer that differentiates the service required by the workload and implements a control admission under extreme overload. The results show that the burstiness in the workload has to be controlled on the Web servers in order to obtain the best response in terms of performance and overhead