The field of high-availability in the web area is often complicated, large, and hard to grasp. But it doesn’t have to be, thanks to CARP and HAProxy. The combination of these two techniques makes it possible to distribute requests to multiple servers and thereby avoid the single-point-of-failure problem. For this, we only need at least 2 computers with FreeBSD (or another BSD system with CARP support) that are in the same subnet and some time to set up the following software: