Condolences to the person running mastodon.rocks (which lost its database). I know that sinking feeling as you realize that something went wrong.
Let it be a serious reminder to everyone to have regular backups.
I've lost an entire VPS to Scaleway once, it wasn't even anything I did, their hardware just failed. Not having backups is living on the edge.
@Gargron I know what it means to lose data, too. Since my last big data loss (I think is was a Diaspora* instance) I make daily backups to an external server. It saved my ass several times 😬