Do you have experience with HAProxy?

Yes, I have experience working with HAProxy. It is a high-performance TCP/HTTP load balancer and proxy server. I used it for distributing traffic among multiple application servers, configuring health checks, and SSL termination.

Example of a basic HAProxy configuration for HTTP load balancing:

frontend http_front
    bind *:80
    default_backend http_back

backend http_back
    balance roundrobin
    server srv1 192.168.1.10:80 check
    server srv2 192.168.1.11:80 check

This configuration allows for evenly distributing incoming HTTP requests between two servers with availability checks.