[immibis]

Yeah, but you're locking the whole file and if you try to open it while it's locked, sleep-polling for it to be unlocked. It's safe, but it's a minimum viable product - as they say, sqlite is a replacement for fopen, not for a fully featured database. Client/server systems have better locking.

[liontwist]

I mostly agree. If you need an RDMS get a real one that has all the features and granular locking.

The only point I’m disagreeing about is the blanket statement “your SQLite website won’t work if it has concurrent writers”. It will.