I'd agree to this whole heartedly. At first glance (if I'm understanding your implementation correctly), it appears like you're already going to use up the same

I'd agree to this whole heartedly. At first glance (if I'm understanding your implementation correctly), it appears like you're already going to use up the same amount of space a buffer would anyway. In this case you're just tasking the LUA best practice, but making it a feature within Redis itself. Regardless I think you're really onto something that people want. There's going to be a trade off one way or another, but the Redis community is all about speed, so the faster and more efficient you can do it, the better (: