Hi.
(My first post in this forum after creating my first site with Processwire )
Only to let you know that the u-nikos's nginx configuration works perfect with Processwire 2.4
I think you can add "official" support and link to his comment for the configuration. I had doubts about how difficult it would be at the beginning and maybe there are people in the same position without knowing that it's really easy to make it works.
I'll work a little more with nginx caching (or microcaching). I'll let you know if I do some advances in this area.
Best
