Simulating and Modeling Secure Web Applications

Abstract. Characterizing application servers performance becomes hard work when the system is unavailable or when a great amount of time and resources are required to generate the results. In this paper we propose the modelingand simulationof complex systems, suchas application servers, in order to alleviate this limitation.Using simulations, and specifically coarse-grain simulations as we propose here, allows us to overcome the necessity of using the real systemwhile taking only 1/10 of the time than that of the real system to generate the results. Our simulation proposal can be used to ob-tain server performance measurements, to evaluate server behavior with different configuration parameters or to evaluate the impact of incorpo-rating additional mechanisms to the servers to improve their performance without the necessity of using the real system.