I wouldn't use it. Use the right tool for the right job. Nginx is good at caching but Varnish is often better. HAProxy is far better suited to providing load-

I wouldn't use it. Use the right tool for the right job. Nginx is good at caching but Varnish is often better. HAProxy is far better suited to providing load-balanced HA. Regarding this article, this API makes is ideal to dynamically-reconfigure HAproxy, adding and removing servers on-the-fly, which is super-useful in production.