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To add to 030's answer, and as a devops engineer who has had to do this a few times, learning how to set up replication and failover in an automated fashion is very important. If you're learning, start by setting up replication by hand on some test servers https://www.postgresql.org/docs/13/runtime-config-replication.html Then craft a method for automating ...


In my opinion an Operations candidate (DevOps is a culture, not a role) should be capable to perform at least the following actions: deploy postgres backup postgres restore postgres run some psql commands like select and some innerjoins knows what the effect on memory usage would be if a select * is issued No manual labour, only automation. Deploy the ...

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