| From: | "Andrey M(dot) Borodin" <x4mmm(at)yandex-team(dot)ru> |
|---|---|
| To: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
| Cc: | Sergey Prokhorenko <sergeyprokhorenko(at)yahoo(dot)com(dot)au>, Jelte Fennema-Nio <postgres(at)jeltef(dot)nl>, Michael Paquier <michael(at)paquier(dot)xyz>, Aleksander Alekseev <aleksander(at)timescale(dot)com>, pgsql-hackers mailing list <pgsql-hackers(at)postgresql(dot)org>, Peter Eisentraut <peter(at)eisentraut(dot)org>, Przemysław Sztoch <przemyslaw(at)sztoch(dot)pl>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, Mat Arye <mat(at)timescaledb(dot)com>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, Nikolay Samokhvalov <samokhvalov(at)gmail(dot)com>, Junwang Zhao <zhjwpku(at)gmail(dot)com>, Stepan Neretin <sncfmgg(at)gmail(dot)com> |
| Subject: | Re: UUID v7 |
| Date: | 2024-11-21 21:22:10 |
| Message-ID: | 668541A1-715A-495D-8934-5F9EE74254CD@yandex-team.ru |
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| Lists: | pgsql-hackers |
> On 21 Nov 2024, at 02:24, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
>
> But does replacing the least significant 2 bits
> with random 2 bits really not affect monotonicity?
You are right. We have to take into account this when calculating monotonicity. PFA another version.
Best regards, Andrey Borodin.
| Attachment | Content-Type | Size |
|---|---|---|
| v35-0002-Mix-in-2-bits-of-entropy-into-timestampt-of-UUID.patch | application/octet-stream | 1.8 KB |
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