Re: Compress prune/freeze records with Delta Frame of Reference algorithm

Evgeny Voropaev <evgeny.voropaev@tantorlabs.com>

From: Evgeny Voropaev <evgeny.voropaev@tantorlabs.com>
To: Andrey Borodin <x4mmm@yandex-team.ru>, Andres Freund <andres@anarazel.de>
Cc: Tomas Vondra <tomas@vondra.me>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2026-04-10T08:44:07Z
Lists: pgsql-hackers
> Evgeny, do you know of any cases when the patch has negative effect?
>
> I think if it’s strictly non-negative - then we can just weight complexity of maintaining
> the proposed approach against benefits.

Andrey, during my research and testing I haven't encountered any
negative effects from this patch on the WAL size.




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