caddy-website/new/includes/examples/proxy.md

example.com

# Serve PHP sites
handle /blog/* {
	root * /var/www/wordpress
	php_fastcgi localhost:9000
	file_server
}

# Proxy an autoscaling API with dynamic backends
reverse_proxy /api/* {
	dynamic srv _api._tcp.example.com
}

# Proxy a compute-heavy distributed service
# with load balancing and health checks
reverse_proxy /service/* {
	to              10.0.1.1:80 10.0.1.2:80 10.0.1.3:80
	lb_policy       least_conn
	lb_try_duration 10s
	fail_duration   5s
}

# Proxy everything else to an HTTPS upstream
reverse_proxy https://service.example.com {
	header_up Host {upstream_hostport}
}