This Lua library reimplements part of the ngx_lua module's NGINX API for Lua with LuaJIT FFI
and installs the new FFI-based Lua API into the ngx.* and ndk.* namespaces used by the
ngx_lua module.
In addition, this Lua library implements any significant new Lua APIs of the ngx_lua module
as proper Lua modules, like ngx.semaphore and ngx.balancer.