If lemmy instance ‘A’ defederates from instance ‘B’, but ‘B’ doesn’t explicitly defederate from ‘A’; can the users on instance ‘B’ still see the content from ‘A’, but not interact? Or are both sets of users prevented from seeing each others content altogether?
Eithers users could visit the domain directly ofc, I’m just curious if ‘B’ still retrieves the content from ‘A’ to show in user feeds.
It’s both ways. They effectively break that link and become isolated from each other.
What about any cache of past, shared content? Is there any such thing?
that stays up
I’m just curious if ‘B’ still retrieves the content from ‘A’ to show in user feeds.
It works the other way around: instance A pushes the content to instance B. Therefore if A defederates B, then obviously A ain’t gonna be pushing the content.
There’s an edge case where instance C is involved: A could comment on a post on C, and then C would forward it to B as well. But then B wouldn’t be allowed to fetch the user profile from A anyway and might just drop it regardless. I’m not sure the particular way Lemmy handles this.
It works the other way around:
Is that the while story, though? A defederating B also means A rejects content from B, right? Otherwise, it would be less than useless: defederating a CP hosting instance yet still allowing B to push that content to A would be disastrous.