It's incredible that with the increases in processing power and storage technology, and the continuous performance enhancements of postgres in particular the last years, any "scalable by design" solution of 10 or even 5 years ago can easily be implemented in postgres these days. I guess the 80/20 rule applies more than ever in these cases.

I am far from a database expert, but the fact that I have been able to implement without much effort efficient systems that have high bandwidth and reliability requirements, balancing and low latency speaks eons of the current state of affairs.