Let’s use lemmygrad.ml as an example. My home instance is lemmy.world, which I see has defederated from lemmygrad.ml. If I post to a community on lemmygrad.ml, will everyone be able to see it?
What if the opposite is true? What if lemmygrad.ml is the one who defederated from lemmy.world, and not the other way around as in the above example?
I’m just a little confused by how federation works. I know that I won’t see lemmygrad.ml posts on my All feed due to defederation, regardless of who defederates with whom.
Each instance has a copy. There are a couple of ways to backfill information, but in general any communication that happens gets broadcast out to every instance that’s subscribed. If an instance is offline or otherwise unavailable (like it’s defederated), then that instance will not get that message and will be slightly out of sync.
It’s this semi-sync nature that also makes it so that anything posted likely exists somewhere even after you delete because nothing guarantees that every instance will get the delete message.
You are not logged in. However you can subscribe from another Fediverse account, for example Lemmy or Mastodon. To do this, paste the following into the search field of your instance: [email protected]
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Does that mean that all the posts and comments from said instance prior to defederation will still be visible in the home instance?
I too am curious about this. Does each instance have its own copy of the data from the other instances? How does it stay in sync?
Each instance has a copy. There are a couple of ways to backfill information, but in general any communication that happens gets broadcast out to every instance that’s subscribed. If an instance is offline or otherwise unavailable (like it’s defederated), then that instance will not get that message and will be slightly out of sync. It’s this semi-sync nature that also makes it so that anything posted likely exists somewhere even after you delete because nothing guarantees that every instance will get the delete message.
Yes. Defederating - at least right now - only stops the communication (hangs up the phone). Any existing posts/comments will still be present.