HAproxy is a high-performance and highly-robust TCP/HTTP load balancer which provides cookie-based persistence, automatic failover, header insertion, deletion, modification on the fly, advanced logging contents to help trouble-shooting buggy applications and/or networks, and a few other features. It uses its own state machine to achieve up to ten thousands hits per second on modern hardware, even with thousands simultaneous connections.

WWW: https://www.haproxy.org/
