Performance based cost models for improving web service efficiency through dynamic relocation

The performance and quality of a web service are important factors and are expected by parties utilizing the service. This paper proposes and implements a cost efficiency solution to cater for web services in a unique set of situation. The solution is designed for web services that have frequent user groups scattered in various geographic locations, without the existence of access patterns. This optimization solution is developed for the Fluid Infrastructure methodology. Its main emphasis is fundamentally to provide a mechanism that is capable of reacting to various problems (operational and performance related) in an efficient and autonomous manner. Discussions within this paper focus on the algorithms that are used to compute the efficiency metrics and implementation issues of the solution. Further, evaluation of these solutions are also demonstrated and validated. © Springer-Verlag Berlin Heidelberg 2005.