Interesting article here: https://grafana.com/blog/2023/08/23/how-we-scaled-grafana-cl...

Utilizing: https://memcached.org/blog/nvm-caching/,https://github.com/m...

TLDR; Grafana Cloud needed tons of Caching, and it was expensive. So they used extstore in memcache to hold most of it on NVMe disks. This massively reduced their costs.