[tracker1]

FWIW, in a lot of cases you aren't expecting even thousands of simultaneous users, so SQLite is a perfectly valid option. Not to mention services like Cloudflare D2 and Turso which build on SQLite as a core with different features for scale/concurrency.

A lot of people manage to run several containerized applications on a single VPS behind a reverse proxy for personal or small groups. Managing a full rdbms takes work supporting multiple applications, or spinning up multiple instances per app in said containerized flows takes up excess resources, where SQLite would do the job just fine.

Not everything is going to be running 5+ nines of operation with distributed workloads. Plenty of real things run on a decent server with a good enough backup system in place.