Message-ID: <610bfd9db7c29f03ba0d44d6fb9feb7c724f6f70.camel@gunduz.org>
Subject: Re: Built-in Raft replication
From: Devrim =?ISO-8859-1?Q?G=FCnd=FCz?= <devrim@gunduz.org>
To: Jim Nasby <jnasby@upgrade.com>, Greg Sabino Mullane <htamfids@gmail.com>
Cc: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>, Andrey Borodin	
 <x4mmm@yandex-team.ru>, Tom Lane <tgl@sss.pgh.pa.us>, Konstantin Osipov	
 <kostja.osipov@gmail.com>, Nikolay Samokhvalov <nik@postgres.ai>,
 PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: Wed, 23 Apr 2025 20:01:05 +0300
In-Reply-To: <0AA66026-3707-4252-B97A-86CC65F1F22E@upgrade.com>
References: <Z_1Cq7JvabsFYjQo@ark>
	 <CAKAnmmJxGHcQmzXqEQ-nppZjXyH7i5W_7Cz8JNMb2+6c5+D+og@mail.gmail.com>
	 <CAM527d9+eGvdih1GxoPDJ2WYs6eitf39oNTxGxnCK1PgF=A8wg@mail.gmail.com>
	 <1798838.1744759182@sss.pgh.pa.us>
	 <20FB597F-641F-48F8-8428-D8DDBA802D58@yandex-team.ru>
	 <CAExHW5udz081Unx5qcLZ89DnR4cp6OhW0TCoco3+AEkGw480uQ@mail.gmail.com>
	 <212D5973-FDD0-4CF5-BCD0-2760EC319DF3@yandex-team.ru>
	 <CAExHW5tq8ShEfboFa52wDMWmyaW+6kX_6x8MZ-0TP65tOhJ1wQ@mail.gmail.com>
	 <CAKAnmm+QJnL_APyKhM3hjkOv9DXjWaqJxB2nFDuNH9JqVdTfXA@mail.gmail.com>
	 <0AA66026-3707-4252-B97A-86CC65F1F22E@upgrade.com>
Autocrypt: addr=devrim@gunduz.org; prefer-encrypt=mutual;
 keydata=mQINBFN+TjkBEAC6pudhV1V54kHPe91nr6Erz6VuG93VKfcHOHN86yET35s8ytey7f//m
 93mW0X6LJUMbY+Z0BztU4EauGAhYRSFzpBWUVBCxaaSyB+l0FR6WtH/Lv6Sxql0GLs6Uhxsk2v3jJ
 tMtk+hFAW2TJInW0ab1xxwTiiHFmSnJOBEK7IMlOOu5kfOAILgGOgiyMUPsDf5iTIJ35iX9hqFvmz
 MueFVwAExTeTkKCRXvuGXrO28Bbesy6h4GbJe1bUaTwTMEBn90oQD20UUKI9Lvo46c1SkqF1nOSoQ
 A3A2eBjWACq68DQ9Q8TbtkBlL8QKftrFz3SL0jth9ZpxyYfm+jiZ5LEAd717YM7qjvH5Yq0juZO3U
 jz2L9RVgyIF1lTQ33fQEuGn797n7LxdaQSdOYK88yrpABic6fJs6rxGy86HcNVHJQCfxgu+uU4eG9
 /wzBKllXreabD2JJXIRjqvhJTXd7JWaF6TZUEUM0SH2GlA6I2G2vGSyRoe0/jaqUIDGm5drzFGkrK
 7CwhWzLqxSBlVkCelhOVfDuyit3ypwPhsztTOgZ9w3iwnAPZWuqXbys2Z26H9hQb5eG7xlkCZwlSr
 mD8mUdHlU5DP84VPIXX6mGCh0I4EJ4ur61CNESpv86BKfGUpbl/3x9XSmcWfvdxB4JnrjHBm9aDIQ
 ZzukEJGdiGBpQARAQABtCNEZXZyaW0gR8O8bmTDvHogPGRldnJpbUBndW5kdXoub3JnPokCOQQTAQ
 IAIwUCU35OOQIbAwcLCQgHAwIBBhUIAgkKCwQWAgMBAh4BAheAAAoJENjDPf6Sz261pAgP/j4OJd8
 EfBLcdkeYyWKNVV3xN6KGF5tTo5iLjjIBmxmj7403DoigD4qfXY8UQ1hG1e0vTe+zaBuL+fMmn3Rg
 SAcUcjNUjVwcOeGFIMO0uMDX4xnMeAahjuc+2EKBFBW0UY21aH6BdmM98GkU/gyBpaMt/MC+5Xgsj
 1koqlA9vCj1bnDXVNP7w/MPhVsEGbhkBZFB/vwVDVJ0J1U4vA1pr2ggUGOOv0kXu7r7B7nGQgcxN8
 qh8QBgfP4ePzbubdA3oGY3PTmRjWWDAzA7HpnKD9pPiAFxvhmnUVcOCdTCo9mNaJc+kRXP7yGbsQa
 rOWvLMtCvKa0DjFJ6SDY45h3g1XF+Xp/ZMZLbJ7xNc3zEVnBZc0AIvGL+IlQbo9trPdJvjdrFATio
 UV/cLxug1p4kl8JB6YMvToiKFmMlpQv2wcKK63bm01lDjU93sAy8oZpeKYlOYlN9D0WmyhJbFTlTl
 IJhMX0aY/xfxUaMYJC5DxV+9s18uviqGWDb2zQR3i3qUbfzV27yHnKo194rUblZ128CzAjs32NerE
 CLJjKEpc2Ci14fJZz6c6P0J5JTONBKhAzygQi/l97RGBqsLiniJIsTUjGH+hEr7hTnhEg/ZOQSs32
 h9vVjhQB7WJ9Xg9A3Frw5mD+W3YkMMM4bFryLTM5p7E1iwGlx+XeM8UMzhtYt
Content-Type: multipart/signed; micalg="pgp-sha512";
	protocol="application/pgp-signature"; boundary="=-ZzNjzy7g2vuXUfeVLNoL"
User-Agent: Evolution 3.56.1 (3.56.1-1.fc42) 
MIME-Version: 1.0
Archived-At: <https://www.postgresql.org/message-id/610bfd9db7c29f03ba0d44d6fb9feb7c724f6f70.camel%40gunduz.org>
Precedence: bulk


--=-ZzNjzy7g2vuXUfeVLNoL
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Hi,

On Wed, 2025-04-23 at 11:48 -0500, Jim Nasby wrote:
> unless we added multiple WAL streams. That would allow for splitting
> WAL traffic across multiple devices as well as providing better
> support for configurations that don=E2=80=99t replicate the entire cluste=
r.
> The current situation where delayed replication of a single table
> mandates retention of all the WAL for the entire cluster is less than
> ideal.

I think the problem is handling the stream of global objects. Having
separate stream for each database would be awesome as long as it can
deal with the "global stream".

Regards,
--=20
Devrim G=C3=BCnd=C3=BCz
Open Source Solution Architect, PostgreSQL Major Contributor
BlueSky: @devrim.gunduz.org , @gunduz.org

--=-ZzNjzy7g2vuXUfeVLNoL
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: This is a digitally signed message part

-----BEGIN PGP SIGNATURE-----
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=bhk4
-----END PGP SIGNATURE-----

--=-ZzNjzy7g2vuXUfeVLNoL--