if multiple people are typing simultaneously the posts will be cached - the actual trigger of these posts will eat bandwidth and CPU cycles - the caching will eat RAM and to a lesser extent CPU.
If whatever buffer is allocated for caching fills up, i’d imagine the server will start booting people out.
I’ve been afraid to come out as a nerd because of the inevitable e-bullying on here. but fuck it, I can’t deny it any longer. I’m a nerd. I love computers.