Choosing between PostgreSQL vs MySQL vs SQLite for a small-business order system comes down to one question most buyers skip: how many people or devices need to write to the orders table at the same moment. A single till writing orders has very different needs from three registers and a web shop writing at once. The …

A growing SMB app hitting its first real concurrency problem faces a decision that's easy to get wrong in either direction: migrate to a client/server database too early and take on operational overhead the app doesn't need yet, or stay on SQLite too long and let write contention turn into user-facing timeouts. The …