Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1u4wFE-009jFd-2k for pgsql-hackers@arkaria.postgresql.org; Wed, 16 Apr 2025 06:27:37 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1u4wFC-007jfL-4V for pgsql-hackers@arkaria.postgresql.org; Wed, 16 Apr 2025 06:27:34 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1u4wFB-007jcy-Oi for pgsql-hackers@lists.postgresql.org; Wed, 16 Apr 2025 06:27:34 +0000 Received: from forwardcorp1d.mail.yandex.net ([2a02:6b8:c41:1300:1:45:d181:df01]) by makus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1u4wF8-000KE5-0l for pgsql-hackers@lists.postgresql.org; Wed, 16 Apr 2025 06:27:33 +0000 Received: from mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net [IPv6:2a02:6b8:c42:921:0:640:f23d:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id A4ABC61657; Wed, 16 Apr 2025 09:27:25 +0300 (MSK) Received: from smtpclient.apple (unknown [2a02:6b8:b081:b418::1:2c]) by mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id NRBOq22FiiE0-DnCwrd4X; Wed, 16 Apr 2025 09:27:25 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1744784845; bh=k8PklsV03le71o4RsjJ57rKP9c1zSVbh1564KdKy4vQ=; h=Message-Id:To:Date:References:Cc:In-Reply-To:From:Subject; b=rMBnqP4gddbrFGIxGlDYUiZHGVB6hTNvnsR0tvo2dFhML/ZZnheZyEelGMaRgnS3F uCqr7rPUzRtAKf84Zit8yJsOLZEJ12Eu2dutKVB0PbR74cqQ+xFtS13PkwmtxQ3ylr owvZrO7H2P5w+jmMbFgcmjPAh9JeK9GJWTyDhv1E= Authentication-Results: mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3776.700.51\)) Subject: Re: Built-in Raft replication From: Andrey Borodin In-Reply-To: Date: Wed, 16 Apr 2025 11:27:13 +0500 Cc: Tom Lane , Konstantin Osipov , Greg Sabino Mullane , Nikolay Samokhvalov , PostgreSQL Hackers Content-Transfer-Encoding: quoted-printable Message-Id: <1D0DD42E-0CFC-4983-ADCD-6FB742F9DAD7@yandex-team.ru> References: <1798838.1744759182@sss.pgh.pa.us> <20FB597F-641F-48F8-8428-D8DDBA802D58@yandex-team.ru> <212D5973-FDD0-4CF5-BCD0-2760EC319DF3@yandex-team.ru> To: Ashutosh Bapat X-Mailer: Apple Mail (2.3776.700.51) List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk > On 16 Apr 2025, at 11:18, Ashutosh Bapat = wrote: >=20 > Having only some of the nodes act as DCS > and others purely PostgreSQL nodes will reduce waste of resources. But typically you need more DCS nodes than PostgreSQL nodes. Did you = mean =E2=80=9CHaving only some of nodes act as PostgreSQL and others purely = DCS nodes will reduce waste of resources=E2=80=9D? Best regards, Andrey Borodin.=