this post was submitted on 11 Jun 2023
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Asklemmy
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I find it strange that anything lives on a single server at all. It's wasting one of the best parts of being peer to peer. Redundancy. Every server should just be sharing the ultimate load and hosting parity so nothing can be truly lost when someone decides they're done with their side project...
It doesn't really. I'm viewing this post from my instance, which has saved a copy of this post from lemmy.ml
Me viewing this post doesn't hit lemmy.ml at all, although making this comment will.
Ah, I misunderstood then.
What happens if lemmy.ml is down?
All the users and communities registered there will cease being able to connect to the rest of the network, but the data should still be cached on all the other servers.
The keyword is "cache". Lemmy doesn't guarantee the cache, so if an instance X would go down permanently, you would eventually lose this data.
My presumption was that with over 200 instances, maybe over 1000 in the near future, all the old data should be collectable in theory without loss. But you're right, there's no guarantee of this.
Media from users of lemmy.ml won't load. You wouldn't be able to subscribe to communities on lemmy.ml. But I think every other instance would show cached data and hold any new comments/posts/votes to sync when lemmy.ml comes back up. I'm not sure how long that cache is kept.
That's what federation means, not really peer to peer