Dear Team,
We are in the process of upgrading our PostgreSQL database from version 12 to version 15. I would greatly appreciate your advice on the following:
1. Would it be recommended to use the --link option with the pg_upgrade command, from disk space point of view? Are there any potential downsides to consider?
2. Do you have any suggestions or best practices for performing an efficient upgrade in a replication setup (streaming replication) for both the primary and standby servers?
Thank you in advance for your insights and guidance.
Best regards,
Raman