Currently we don't use http checks (L7) for the most of backends in Haproxy, so it uses TCP connection checks (L4) by default. Switching to HTTP checks should improve backend problem detection and thus improve services availability.
Currently we don't use http checks (L7) for the most of backends in Haproxy, so it uses TCP connection checks (L4) by default. Switching to HTTP checks should improve backend problem detection and thus improve services availability.