Postgres Observability
I don’t like the devaluation of the word observability. A chart like this used to be called something like ‘tools to monitor and understand postgres’. 
Observability is the ability to derive the internal state of a system from the outside. Usually done through traces.It would be great if Postgres could emit a trace per query, showing in real-time which internal components were hit by this query. A sort of continuous query explain service.Combine these traces to database clients and other front end services and you’ll be able to point to the front end service version which causes cache misses deep inside postgres.