[malandin]

It is an interesting idea. What troubles me is the read/write rate in a real production environment. If it is bound by S3, a buffer will eventually be needed and then it all become very complicated. At least it is how it looks on the surface

[mineev]

You are right, the time of a single write/read is Achilles' heel. But if we are talking about parallel processing it can keeps several hundreds milliseconds delay and provides enormous throughput.