Re: ZStandard (with dictionaries) compression support for TOAST compression

Nikhil Kumar Veldanda <veldanda.nikhilkumar17@gmail.com>

From: Nikhil Kumar Veldanda <veldanda.nikhilkumar17@gmail.com>

To: Yura Sokolov <y.sokolov@postgrespro.ru>

Cc: pgsql-hackers@postgresql.org

Date: 2025-03-06T17:28:29Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Split regression tests for TOAST compression methods into two files
- 74a3fc36f314 19 (unreleased) landed
Refactor non-supported compression error message in toast_compression.c
- 1dbe6f76677c 19 (unreleased) landed

Hi Yura,

> So, to support "super-fast" mode you have to accept negative compression
> levels. I didn't check, probably you're already support them?
>

The key point I want to emphasize is that both zstd compression levels
and dictionary size should be configurable based on user preferences
at attribute level.

---
Nikhil Veldanda