I am a new in this language..
I want to make an app that can handle 3000req/second without losing data
My final code want to like this...

which has this specification

only use one core
I've tried above code and it didn't work
so i split my code until become like this

it still doesn't work..
So my question can nodejs handle 3000 concurrent user?
if yes, please give me real code or just stucture or what package i used and not used.
only use one core my server