[Muromec]

Sounds like you are doing cool stuff the cool way, which can't be said about everyone.

>Is PHP good for both? I think PHP is NOT good for long running stateful processes, but I didn't use it in 10years. And it probably is not needed for static files.

No, of course it isn't. I didn't touch it with a long pole for even more years and don't even want to. And would not argue to do what you are doing in anything that isn't running on BEAM/OTP.

The point I'm trying to make is -- for most of the web stuff, making transactional response from a short-lived http handler is good enough and you can do it even in PHP (which is not a praise for PHP as a great tool I enjoy using, but the opposite). It would not the most optimal solution by any metric, not the most elegant or sophisticated either, but it's survivable, it's the lowest bidder.