Yak Shaving: Adding OAuth Support to Nginx via Lua
seatgeek.com
seatgeek.com
I did do some investigation into openresty, but decided against it because it would not confer benefits.
The other thing is that we custom compile other modules into nginx - tracelytics[1] being one of them - and it was simpler to decipher the debian packaging than it was to do the same for openresty.
If there were an OS option, I would have used it :)