How to Kill a Decentralised Network (such as the Fediverse) (ploum.net)

submitted 11 months ago by lautan@lemmy.ca to c/fediverse@lemmy.world

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[-] FlihpFlorp@lemm.ee 6 points 11 months ago

So please correct me if I’m wrong but isn’t defederation two ways, like if my instance (lemm.ee) defederates from threads, doesn’t threads not see any lemmy posts anymore.

Assuming im not horribly wrong (and even if I am at least we won’t be able to interact with threads users) what’s the problem if we don’t see content.

And don’t get me wrong I’m 100% against threads federating and I feel like I’m missing something but what’s the problem when defederation is a tool?

[-] gullible@kbin.social 4 points 11 months ago

If A, B, and C are federated and A defederates B and B does not defederate A, then it would look like this. A>B=C

A cannot see B, B can see A through C, and C can interact with both. Comment federation when B comments on A can be a bit spotty, from what I’ve seen.

[-] Risk@feddit.uk 3 points 11 months ago* (last edited 11 months ago)

As far as I understand, this isn't quite right (unless it's changed recently).

If A defeds B, then A no longer sends new posts to B, accepts comments or posts from B users, or receives new posts from B. Any comments from B users on A's old posts (made before defederation) are no longer acknowledged by A.

I think A users can still interact with B's posts, but then I haven't seen any beehaw users in forever. So perhaps not?

C can obviously still interact with both A and B posts normally. On posts from C, both A and B users can still interact.

So, in short defederation creates a hard wall preventing interaction between A and B. The only way A and B users can interact is on C.

It's unfortunate as beehaw would have benefitted from a uni-directional defederation (i.e. preventing .world users from posting on beehaw, but not preventing .beehaw users from posting on .world. Unfortunately, it's both.)

[-] FlihpFlorp@lemm.ee 2 points 11 months ago

So it is a two way wall if only one side defederates

[-] gullible@kbin.social 2 points 11 months ago

It may have changed in the last few months, but I specifically recall seeing hexbear user comments on lemmy.ml posts well over a month after the one-sided defederation while on my sh.itjust.works account. I checked from at least 3 separate instances, lemm.ee, .world, and .works, as it was more than a little confusing for me. That’s also how I learned about spotty comment federation.