I would like to give an update on "federation" on Bluesky.
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This is why—although, now Blacksky is letting me "see through" Bluesky's worst moderation decisions, I'm glad, because Bluesky's moderation is weird and arbitrary—I think it's a downside of the network, and Mastodon made the right decision not offering this feature. Fediverse defederation forces a degree of soft group consensus on moderation: it's possible to say "if you're talking to X, I don't want to talk to *you*". On Bluesky we are all ghosts walking through walls and this can't be enforced
@mcc I guess you could simultaneously see this as a success and a failure for ATproto: decentralization is possible... but you immediately get a lot of the same problems ActivityPub has that ATProto ostensibly solved.
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@mcc I guess you could simultaneously see this as a success and a failure for ATproto: decentralization is possible... but you immediately get a lot of the same problems ActivityPub has that ATProto ostensibly solved.
@operand However, they experience those problems in a *completely different way*, which not only is their userbase unprepared for, but the pre-existing experience of fediverse users does not exactly prepare for!
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:frogsiren: BLUESKY HAS OFFICIALLY NETSPLIT :frogsiren:
There has always been more than one Fediverse. Different instances make different moderation decisions so some instances can't see posts by some users.
There has only ever been one Bluesky because every ATProto frontend uses the same Appview.
It is January 2026 and that's no longer true; Blacksky's Appview is available for beta use and there is at least 1 user banned on Bluesky but not Blacksky. And vice versa.
Rudy wants revolution. (@rude1.blacksky.team)
Bluesky runs an appview. Blacksky runs an appview. A complete appview is a several terabytes sized database of the >18 billion follows, likes and posts of all bsky users, ever and forever. To run a different appview is to make a fork in bsky’s timeline. One has new posts from Łink. One doesn’t.
Bluesky Social (bsky.app)
@mcc oh that's sick. congrats to blacksky for making it
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t yet
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:frogsiren: BLUESKY HAS OFFICIALLY NETSPLIT :frogsiren:
There has always been more than one Fediverse. Different instances make different moderation decisions so some instances can't see posts by some users.
There has only ever been one Bluesky because every ATProto frontend uses the same Appview.
It is January 2026 and that's no longer true; Blacksky's Appview is available for beta use and there is at least 1 user banned on Bluesky but not Blacksky. And vice versa.
Rudy wants revolution. (@rude1.blacksky.team)
Bluesky runs an appview. Blacksky runs an appview. A complete appview is a several terabytes sized database of the >18 billion follows, likes and posts of all bsky users, ever and forever. To run a different appview is to make a fork in bsky’s timeline. One has new posts from Łink. One doesn’t.
Bluesky Social (bsky.app)
@mcc What's the monthly cost on maintaining several terabytes of data in perpetuity?
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@mcc What's the monthly cost on maintaining several terabytes of data in perpetuity?
@lrhodes Depends on how you do it I imagine. But remember that's several terabytes for the like what, three years or something Bluesky has been running. We will expect it to grow endlessly, and we should expect the growth to grow endlessly as Bluesky becomes more popular.
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@lrhodes Depends on how you do it I imagine. But remember that's several terabytes for the like what, three years or something Bluesky has been running. We will expect it to grow endlessly, and we should expect the growth to grow endlessly as Bluesky becomes more popular.
@mcc Yeah. I don't see how that's sustainable. I'm not sure it's even sustainable for Bluesky.
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What I saw happen when Black Twitter came to Fediverse is attempts to build community resources— like shared cross-instance blocklist infrastructure— get demonized by white queers as being anti-queer (because they, personally, wound up moderated— due to, as far as I saw, entirely real racism). I saw multiple projects shut down or hobbled by this and good people driven off fedi. I don't know if any devs from that era are involved in the new Bluesky efforts. But the Bluesky efforts *are* thriving.
@mcc sad stuff
Thanks for the history lesson and analysis. -
@mcc Yeah. I don't see how that's sustainable. I'm not sure it's even sustainable for Bluesky.
@lrhodes Twitter managed it, but they had a revenue stream, which Bluesky doesn't
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@gbargoud Sure. You could do that. I'm aware of a patch to the PDS (backend) software that allows it to flat out publish via ActivityPub. I haven't seen a *frontend* that merges the streams yet though.
There's also the problem that you can't reeeallly monitor *just part* of the Bluesky network. To follow part of it you're supposed to drink the entire firehose and filter out the parts you care about.
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This post is 4 months old hehe.
At this moment we are making our own red dwarf style post fetching, wich is done directly on the PDS
