Currently static files aren't cached at all which is a major drag on frontend performance, especially if you have many mobile users. Is it possible to setup a directive for caching static content for a month or so? It really slows down the whole user experience.
Also can you tweak the ssl settings with fore instance "ssl_session_cache shared:SSL:10m". It seems like every second or third time it has to reinitiate ssl handshake. Tweaking this with some caching could alleviate this.
Also, when I got you. Is there a way to gracefully reload you site without it going offline for a few seconds?
Else great product.