Every request that passes through CloudFlare goes through Lua. It has how we look up and apply a customer rules to a recess. We just recently realized a non-blocking logger option for Nginx [2] using Lua and are in the process of developing a new KT library [3] in Lua.

Here are the most recent lua libraries we have open sourced... [1] https://github.com/agentzh/lua-resty-lock [2] http://github.com/cloudflare/lua-resty-logger-socket [3] http://github.com/cloudflare/lua-resty-kyototycoon