A similar discussion from 2021 that didn't track a lot of attention: https://news.ycombinator.com/item?id=29165586
And the only answer from eesmith cites a very old implementation, I'm wondering what's being used nowadays in the HN code base
They have a job listing looking for engineers. I have no idea if this role would work on HN or if the tech stack is relevant to HN.
It lists the tech stack as Rails, React, Postgres.
https://www.ycombinator.com/careers?ashby_jid=ef00c8d1-76e7-...
I think hackernews was originally built with a Lisp language right?!
If so, probably started with a database that you would commonly pair with a Lisp language
Every discussion I've seen mentions filesystem-based storage rather than any database. Haven't seen any evidence to the contrary.