Here or in an article? We use both in our infrastructure.
Generally I would say that if you're proxying web connections and need caching or the ability to do lots of complicated rewriting on the proxy side, use nginx. If you're proxying database, mail or similar... haproxy. If you don't need any caching or similar, either nginx or haproxy depending on your application.
Generally I would say that if you're proxying web connections and need caching or the ability to do lots of complicated rewriting on the proxy side, use nginx. If you're proxying database, mail or similar... haproxy. If you don't need any caching or similar, either nginx or haproxy depending on your application.