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charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.4 (3.50.4-1.fc39) MIME-Version: 1.0 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On Fri, 2024-07-12 at 20:41 +0530, Mukesh Tanuku wrote: > I have a question with postgres HA setup. > We are setting up a 2 node postgres cluster with async streaming replicat= ion, we want to > define a RPO (Recovery point objective) in case of primary failure.=C2=A0 >=20 > How can we best define=C2=A0the RPO in this setup? since it's an async st= reaming replication > setup there might be a chance of data loss which is proportional to the r= eplication delay.=C2=A0 >=20 > Is there any way we can configure=C2=A0the delay duration, like for examp= le to make sure every > 10 mins the standby sync has to happen with primary?=C2=A0 When there is a delay, it is usually because replay at the standby is delay= ed. The WAL information is still replicated. You won't lose that information o= n failover; it will just make the failover take longer. Unless you have a network problem, you should never lose more than a fracti= on of a second. Yours, Laurenz Albe