I found the story of how Backblaze stores things "on top of", versus "in" filesystems similarly interesting. https://www.backblaze.com/blog/vault-cloud-storage-architect...
It seems like they could go one further and eliminate the ext4 underneath.
It seems like they could go one further and eliminate the ext4 underneath.
Talks about Facebook, Instagram, S3 and other Object Store services and how they deal with storage at scale.