Kent's recommended NodeJS module, `better-sqlite3`, has some very nifty features including the creation of JavaScript user-defined functions[0] that (if I understand this right) can be called from SQLite. Combined with TRIGGERs, I wonder if it might fire a function within the app when an UPDATE/INSERT happens from a different process? (This is me wondering out loud, I don't actually know.)

I also recommend checking out Replicache[1] and alternatives, which may be a better way to handle the networking and database replication so that it doesn't rely on the underlying DB.

[0] https://github.com/WiseLibs/better-sqlite3/blob/HEAD/docs/ap... [1] https://replicache.dev/