this post was submitted on 10 Aug 2023
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Fediverse
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A community to talk about the Fediverse and all it's related services using ActivityPub (Mastodon, Lemmy, KBin, etc).
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The fediverse is less like Twitter and more like email. You sign up for email through a provider, like Gmail or Outlook, and they have control over your access to the other users and pay the costs of running your hardware, the same way you sign up with a particular domain on Lemmy or Mastodon. Like email, you have an inbox that receives messages, and communities are like email groups you join and send messages to. And, like email, it's based on standards that everyone has agreed on through a group called the w3 consortium.
So each instance within the fediverse can communicate with each other, but how do things like the feeds work? Since there's no algorithm is everything from Lemmy.world only going to show up on the popular feed (if I'm on that instance) or can other things like lemmy.ee or whatever also show up?
And can I comment on posts from a different instance or does that vary per instance?
Sorry, last one. I noticed there are things like music streaming and video sharing instances within the fediverse, so could Lemmy theoretically allow content from those instances to be cross-posted here?
Basically to me this feels like a super modular super media platform that has tons of parts that can plop in and out of the system as needed.
You've got it mostly right. But this part is wrong:
(assuming you're on desktop browser) If you want to browse only lemmy.world communities, click on "local" at the top:
"Subscribed" is all communities you specifically subscribed to (on any instance in the lemmyverse) and "All" is everything on lemmy.world AND all communities anyone on lemmy.world is subscribed to.
(fwiw, my account is on a different instance, startrek.website, but I subscribed to this community, so I saw your post in my "subscribed" feed).
Is it possible to see every community, from every instance, in all?
Not exactly, because instances don't sync communities nobody is subscribed to. That said, if you're on a large instance like .world with tons of users, it's likely you'll see pretty much anything that could be considered worth seeing.
Oook, that explains why my .world acct, and this one are so vastly different. I pretty much just see news and tech from this instance (and porn, obviously)
There is an algorithm and they're adjusting it to try and keep it interesting currently. It depends on whether the instance had contacted the other instance (through a search) or not as to whether they show up on the front page. Also, each instance owner says what to seed their front page with, that's why lemmy.world probably looks different than a niche instance. Someone just explained this to me.
It varies between lemmy vs mastodon vs kbin, etc. Each one reads and expresses their info differently.
Yes but I think there are people who have to develop it. Someone more knowledgeable has to answer this one.
I think you're right but basically it's all in the beginning stages, volunteers coding it, and they're still putting out fires from the reddit migration. It will take a bit.
So what actually happens under the hood is when one instance communicates first time with another instance it builds some local cache of that remote instance. Then, when you open "All", you get everything from your local instance + things cached/requested from other instances. Admins can defederate an instance, in which case you would not see anything from it.
Everything federated will show up.
If federated, you can both see and post both posts and comments on any instance from your home one.
It could. More than that, Mastodon users currently can both subscribe to Lemmy instances and post/comment. It looks kinda weird since they mention post author/community or whomever they answer to in a comment, since they see it as if it looked like Twitter.