Reading this article https://firebirdsql.org/migrating-from-firebird-to-postgresql-what-can-go-wrong- I'm a bit confused (not the first time...) In part 1. Differences in MVCC implementation - he's saying that "It’s not that the PostgreSQL implementation of MVCC is bad — it’s just fundamentally different" But, I thought Firebird had SWEEP instead of VACUUM (how much closer can the words be?) and that FB's implementation of MVCC was essentially similar. Is this correct? Then why is he pointing out the performance diffs because of MVCC? I'm puzzled! -- El!
