Hello,
I’m migrating some apps from Heroku to Render. These apps use PostgreSQL databases in an older version (13). At some point in the future, we will need to upgrade to version 15 or 16, but some of our databases are over 100GB in size.
In Render’s documentation, there is a guide for upgrading major versions (Upgrading Your PostgreSQL Version | Render Docs), but this process involves taking a pg_dump, which can take too long for large databases. My question is: Is there a way to upgrade with no downtime or at least minimal downtime?
Also, in Heroku, we used to schedule database maintenance. Is there a similar feature in Render, or how does database maintenance work?