Perlbal - load balancing white paper
I've added a new White paper to Perl.org: Perl load balancer - which is really there to make people aware of Perlbal.
Thanks to a TPF Grant there is now actual Documentation which really makes using it a whole lot easier! I've had this in production for about 4 years now and it's very stable. Being able to change which servers (or ports) your entire sites traffic goes to make gradual rollouts (and quick rollbacks!) very easy. It also makes upgrading your servers far less complex.
If your not already using a web load balancer infront of your web server check it out!
London Perl developer
Kudos to the grant committee for approving that grant, and to the guys doing the docs. Understanding Perlbal has always required a bit of voodoo knowledge.