I definitely glazed the project enough that some of my comments in other places looked like this.

It's just very well done, and in the Prometheus ecosystem the best backend currently available.

I'll add to the numbers: I run 2 storage demons (once storing with 1m accuracy for 10 years, other with 10s for 2 years)

short term one has 43.8GB and stores 69 bil rows

long term one has 16.8GB and stores 20.4 bil rows

so compression in both cases is getting it to less than a byte per metric entry stored