How many clients requests do you get in the same millisecond?

With UUIDv7 it's split into:

- 48 bits: Unix timestamp in milliseconds

- 12 bis: Sub-millisecond timestamp fraction for additional ordering

- 62 bits: Random data for uniqueness

- 6 bits: Version and variant identifiers

So >4,600,000,000,000,000,000 IDs per fraction of a millisecond.

And unprecise time on the client doesn't matter, because some are ahead and some behind, vut that doesn't make them more likely to clash.

Does that factor in the birthday paradox?