probehost2/caddy/Caddyfile

{
        email [your email]
        order rate_limit before basicauth
}

:80, :443 {
        redir * https://[your domain]
}

[your domain] {
        reverse_proxy [host]:[port]
        log {
                output file [path] {
                        roll_size 10GiB
                        roll_keep 10
                }
                level INFO
        }
        handle_errors {
                respond "{http.error.status_code} {http.error.status_text}"
        }
        rate_limit {
                zone dynamic {
                        key {remote_host}
                        events 2
                        window 5s
                }
        }
}