Storage
Others
- https://news.ycombinator.com/item?id=12455045
- https://github.com/coreos/prometheus-operator/blob/master/Documentation/high-availability.md
- https://www.robustperception.io/how-much-ram-does-my-prometheus-need-for-ingestion/
- https://www.slideshare.net/brianbrazil/so-you-want-to-write-an-exporter