> If the defaults are fine for a use case then unless I want to tune it for personal interest it’s either a poor use of my fun time or a poor use of my clients funds.

It doesn't matter if you've crippled the benchmark if the performance of both options still exceeds your expectations. Not all of us are trying eek out every drop of performance

And, well, if you are then you can ignore the entire post because Redis offers better perf than postgres and you'd use that. It's that simple.