Cost of generating one UUID in memory (single thread, 2,000,000 ids after 500,000 warm-up; indicative, machine dependent)
UUID.randomUUID()                  351 ns per id
Hibernate VERSION_7                769 ns per id
Hibernate VERSION_6                680 ns per id
Hibernate TIME (v1)                 22 ns per id
uuid-creator v7                    352 ns per id
UuidV7Generator (hand-written)     709 ns per id