Welcome to Lemmy!
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Oops, hi again all; I am just learning to administer a Lemmy instance and accidentally deleted all my posts. Not to worry though, feel free to re-introduce yourself here, and welcome to lemmy!

poVoq
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Hello. I am moderating https://lemmy.ml/c/xmpp and am semi-active in the JoinJabber.org collective.

Sam
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oh drat, doesn’t look like their federation support actually lets you subscribe to groups in other lemmy instances yet? Oh well, soon I hope!

poVoq
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It does, how else would I be subscribed here?

It is a bit hidden though. You need to cut and paste the URL into the search field.

But only this post - it’s not possible to follow the whole sub/community or even the whole instance? Because I can only see the community URL for posts, not for communities or whole servers / instances.

Hotman
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this one I can see, but it’s not the link with the fediverse-icon, like next to each post. I named it β€œcommunity url”, (so to get on it from a different instance), but your’s is the normal url…

Hotman
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but it’s not the link with the fediverse-icon

Good point, it’s not very intuative nor is federation simple to understand. The first thing I had to learn was that unless the community (group/subreddit) is originally created on the home server/instance (feddit.de in your case), it’s all copies of the original community from the originating instance.

So I’m guessing you’re looking at feddit.de/c/main@community.xmpp.net. It’s Feddit’s copy of the main group from community.xmpp.net.

To subscribe to a community not already β€œcopied” to Feddit, you have to tell them what URL to copy from. That would be https://community.xmpp.net/c/main, which is where the circled link leads! πŸ˜€

So to subscribe to a community on a different instance, you can β€œCopy link” and paste it in Feddit’s search box. You will see the community show up in the search results, and that’s basically Feddit’s new copy of the original community.

yea, I already got this, but in the end it is still a copy of it?

That was a good explanation with the β€œcopies” of yours - that explains why sometimes the original link and the fed.link from my instance (feddit in this case) was different and not 100% identically (sometimes posts were missing on mine - and I wondered).

So the only way, not to get a copy and 100% up to date β€œview” is to make an account on the local instance, I assume?

Hotman
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the only way, not to get a copy (…) is to make an account on the local instance, I assume?

Yes. Although copies are somewhat supposed to be identical - That’s a big part of what federation is.

the only way, (…) 100% up to date β€œview”

No, it gets updated pretty quickly. If you make a post to a β€œcopied”/federated community, it’s usually sent to the original (and distributed to other connected instances) before you can open a new tab and check the original community for yourself. Same thing when others make posts or comments, you’ll see them almost immediately.

The problems start if there’s comments from many different β€œcopies”, but your home instance doesn’t accept them. We end up with several copies, all of them missing some pieces compared to the original.

To make matters more… interesting, the original community can remove comments yet they can still be reinstated in β€œcopies” around the fediverse.

ah ok. I understand. Thank you very much!!!

But is it necessary that one member of an instance at first needs to create the very first copy (at first) by doing how you explained before (searching on own instance…)? So if no one does, there will be no copy at all on my instance? Or is it done automatically by the system how federation works and what it is?

Hotman
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But is it necessary that one member of an instance at first needs to create the very first copy

Yes. A user subscribed to every single external community in https://feddit.de/communities/listing_type/All/page/1 to bring it over to Feddit.de.

There is no automation when it comes to propagating a community, and this has the unfortunate side-effects that servers can create competing communities because they’re unaware that it already exists or it was made by users who doesn’t know or care about federation.

How many tech communities can you find in the β€œList of popular Lemmy communities and their alternatives” post we’ve been posting in? πŸ˜‚

@aqeeliz@lemmy.ml
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It does. I am following this from my account on lemmy.ml

Menel :xmpp:
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@sam
Testing: Trying to read and write from mastodon here… Let’s see how far I’ll come.
At least I could find the β€œmain” group from a mastodon client…

Sam
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That seems to have worked; hopefully you get replies too :)

Salamander
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Hello again!

haha, I’ll like it again!

poVoq
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XMPP was federated before federation was cool 😁

DigitalVPN
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removed by mod

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