PUBLIC MARKS with tag loadbalancing

Varnish is a state-of-the-art, high-performance HTTP accelerator. It uses the advanced features in Linux 2.6, FreeBSD 6/7 and Solaris 10 to achieve its high performance.

LBVM allows sharing virtual machines among physical servers in a predefined cluster. It is fully configurable and requires only a few setup steps before running automatically. LBM, LB LOG and LB MONITOR (as seen in figure) are the core scripts and perform the necessary steps.

Nginx [engine x] est un serveur HTTP(S), un reverse proxy et un proxy IMAP/POP3 écrit par Igor Sysoev. Il a tourné sur de nombreux sites russes à forte charge durant plus de deux ans. Ses sources sont disponibles sous une license de type BSD. Du fait que la plupart de la documentation de Nginx soit en russe, ce site existe afin d'aider les francophones à mettre en commun leurs connaissances autour de la configuration et du déploiement de Nginx.

Takes a look at mod_proxy; mod_jk is very similar.

Pure Load Balancer runs in userland, but relies on an asynchronous non forking/non threaded/non blocking architecture. Thanks to Niels Provos' excellent event library, it can also efficiently use the kernel notification mechanisms to never waste CPU time