Kernel-based Web switches providing content-aware routing

Locally distributed Web server systems represent a costeffective solution to the performance problems due to high traffic volumes reaching popular Web sites. In this paper, we focus on architectures based on layer-7 Web switches because they allow a much richer set of possibilities for the Web site architecture, at the price of a scalability much lower than that provided by a layer-4 switch. In this paper, we compare the performance of three solutions for layer7 Web switch: a two-way application-layer architecture, a two-way kernel-based architecture, and a one-way kernelbased architecture. We show quantitatively how much better the one-way architecture performs with respect to a twoway scheme, even if implemented at the kernel level. We conclude that an accurate implementation of a layer-7 Web switch may become a viable solution to the performance requirements of the majority of cluster-based information systems.

• Type: Conference
• Year: 2003
• Where: NCA
• Authors: Mauro Andreolini, Michele Colajanni, Marcello Nuccio
• Keywords: Layer-7 Web, NCA 2003, Network Computing, Web Site, Web Switch