[ctc24]

That's a bit of a strawman argument. Per the post, you can't leverage this on a read replica, it has to be run on primary. So you're going to stand up and manage a full new Postgres instance for this?

I'm sure there are many cases when that makes sense, but there are many cases when that's also overkill. An in-memory cache inside your server will give you better performance, and a lot of less infrastructure maintenance complexity.