It's also interesting to see how much traffic being on the front of HN sends. So far it hasn't broken 200 requests in a minute (https://pbs.twimg.com/media/ECJVktXUEAE9kVN?format=jpg&name=...)
This is about 1/100th the traffic I load tested it to handle on a $5 Digital Ocean droplet (which I later upgraded to $10 due to TypeScript compilation using too much memory a different project).
Also, I completely forgot to set up any caching or any rate limiting on "articles" which are a new kind of thing on my site. Of course, it could easily be taken down with a DDOS.
But in the big scheme of things, this validates my belief that most people (including me) spend way too much time worrying about scalability in early stage projects!