Nope, but it does have a Visibility Map due to its MVCC implementation. Go ahead and do an index-only lookup on a table using a UUIDv4. Then repeat with something k-sortable. See how many buffer hits each one has.
I assure you, those add up. Nothing like explaining to a dev that they have hit the theoretical memory transfer limit of the hardware, and it cannot possibly go any faster unless they refactor their schema (or a faster DDR version comes out).
I assure you, those add up. Nothing like explaining to a dev that they have hit the theoretical memory transfer limit of the hardware, and it cannot possibly go any faster unless they refactor their schema (or a faster DDR version comes out).