This is a very cool overview! How much data ends up being cached in the postgres compute tier in the steady state? How much does query performance suffer after

This is a very cool overview! How much data ends up being cached in the postgres compute tier in the steady state? How much does query performance suffer after cold start? Also the video in the post doesn't play for me (and is a bit too dense for its size), I had to download it to my computer to see it. A couple images might be more clear in conveying the key points.