Redis scripting memoize commands

gistfile1.lua

-- Enables calling redis('command',...) as redis.command(...)
if type(redis) == 'function'
then redis  = (
  function()
    local redis_call = redis
    local mt = {
      __call = function (self, ...)
          return redis_call(...)
        end,
      __index = function (self, key)
          local fn = function(...)
            return redis_call(key, ...)
          end
          self[key] = fn
          return fn
        end
    } 
    return setmetatable({}, mt)
  end) ()
end