What is a v7 UUID. Why do we need more than 1. uuid from a random seed and 2. one derived from that and a timestamp (orderable)
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For the others, it’s best to read up on Wikipedia[0]. I believe they all have their unique use-cases and tradeoffs.
E.g. including information about which node of the system generated an ID.
[0]: https://en.m.wikipedia.org/wiki/Universally_unique_identifie...