```caddy
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}
}
```