Title,
I’m really curious because I’m new to this fediverse thing, and I wanted to know if different instances are on a peer-to-peer which could save everything no matter what happens to one instance.
You can download your data/posts and move to another instance, but you can not upload your posts to that instance, you can import who you follow and blocklists I think and your followers get migrated automatically.
But if someone like your post, this post will be on this other instance is that right? (from what I understood)
Not just likes. Any post a user from another instances sees from you, is also stored on their instance. But I don’t think it’s stored indefinitely and it’s also not stored in a way you can make use of. So if the server your account is stored on explodes, technically there are still a lot of your posts stored all over the fediverse’s servers, but there’s no feature that would allow you as the (former) account owner to ask for them or easily collect them.