Fair point on the server being undersized. Stack is actually just Node

In the 90s, people thought about the c10k problem, which is how to handle 10000 connections.

In those days, this 2GB server would have been a dream to have and probably had moved the needle to 20k, 50k or whatever the limit is. You only get problems with 500 connections on a modern machine if you are really really bad at handling each request.