@nemobis

It's all very clever, i really appreciate all attempts of optimizing storage, that's the only way big and medium instances can survive.

My point is, my single user instance has the highest level of storage waste but it's already there, paid.
How many people will see a picture because it's cached on my pleroma for a month ?

Of course this works because one user is one, i receive daily just the amount of media i'm able to consume

What if all users were standalone ?
The most wasted internet resource is residential landline bandwidth