Writes were generally quite fast so the next write rarely got queued. Also we ran it single-threaded. When we moved to Postgres, that also gave us the opportuni

Writes were generally quite fast so the next write rarely got queued. Also we ran it single-threaded. When we moved to Postgres, that also gave us the opportunity to safely switch to phpfpm without worrying about the lock issue. The nice thing about Postgres as opposed to SQLite is that we finally got "searching" as a feature. ;)