[dang]

Recent and related:

Lichess: The free and open source chess server - https://news.ycombinator.com/item?id=32045763 - July 2022 (65 comments)

[kuboble]

It takes $420k per year to run Lichess - https://news.ycombinator.com/item?id=29955204 - February 2022 (266 comments)