Can somebody explain defederation in simple layman terms please?

https://lemmy.ml/post/3693670

Can somebody explain defederation in simple layman terms please? - Lemmy

I have seen that word tossed around lately and I am not completely confident that I know what it means. Thank you.

A, B, and C are federated. They can all see each other’s posts.

New group D shows up. A, B, C, and D all start off seeing each other.

D starts posting anti-pastafarian comments. A and B are pro-pastafarian, and defederate from D.

A and B now no longer see content from D. I forget if that goes but ways or not.

C thinks they should hear D out and don’t defederate, so C still sees everybody.

That’s my basic understanding at least. Politely correct me if I’m mistaken!

On lemmy it’s only if the blocks are mutual, but it varies. It’s bizarrely complicated in the way that lemmy handles it.

It’s bizarrely complicated in the way that lemmy handles it

D gets to look over the fence and see how much fun A and B are having without them and regrets their antipasto attitude?

yeah, I don’t know – personally think a ostracism metaphor would be a better match for federation – once A defederates from D, not only do they block anything incoming from D but they also don’t send anything out to D – D has to patch together posts from thirdhand federations …