For me, it was not monthly, but rather “when it bites you in the ass”.
- Delete all empty rooms and federated rooms without local users.
- Clean up state_groups_state table.
- Delete old media.
All of this is made worse by having more active users and made better by having a large hard drive (my VPS had 20GB, which I almost filled up with the db and media after a few years, with only few users)














People were also (allegedly) terrified of The Arrival of a Train, but soon realized it is all just pictures and there is no train.