If your backend processes are heavy on IO then you will be able effectively to serve only 4 clients at a time, but otherwise you will be able to serve more.
at the same time quickly
It doesn't do it at the same time (at least not more that 4 items at the same time), it does it in turns.
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The answer is event loop
If your backend processes are heavy on IO then you will be able effectively to serve only 4 clients at a time, but otherwise you will be able to serve more.
It doesn't do it at the same time (at least not more that 4 items at the same time), it does it in turns.