Re: CHECKPOINT unlogged data

Andres Freund <andres@anarazel.de>

From: Andres Freund <andres@anarazel.de>

To: Christoph Berg <myon@debian.org>

Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>

Date: 2025-05-30T16:39:02Z

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 →

Add FLUSH_UNLOGGED option to CHECKPOINT command.
- 8d33fbacbac9 19 (unreleased) landed
Add MODE option to CHECKPOINT command.
- 2f698d7f4b7b 19 (unreleased) landed
Add option list to CHECKPOINT command.
- a4f126516e68 19 (unreleased) landed
Rename CHECKPOINT_FLUSH_ALL to CHECKPOINT_FLUSH_UNLOGGED.
- cd8324cc89a9 19 (unreleased) landed
Rename CHECKPOINT_IMMEDIATE to CHECKPOINT_FAST.
- bb938e2c3c7a 19 (unreleased) landed

Hi,

On 2025-05-30 18:17:45 +0200, Christoph Berg wrote:
> A customer reported to use CHECKPOINT before shutdowns to make the
> shutdowns themselves faster and asked if it was possible to make
> CHECKPOINT optionally also write out unlogged table data for that
> purpose. I think the idea makes sense, so there's the patch.

I've seen the need for this quite a few times, fwiw. So +1 to the idea.

Greetings,

Andres Freund