Lemmy is very similar to Matrix. By the way, there are channels in Matrix. There are communities on Telegram....
this post was submitted on 12 Jun 2023
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Are all these thousands of lemmy servers useless?
almost. It's actually worse than that - when you subscribe to a community from your server it will fetch like 20 posts and that's it, you'll get only new stuff after that, so there's no possibility to do a full mirror of selfhosted, for example, if you started your instance today and didn't fetch posts and comments manually.
ActivityPub per se is just a spec on s2s/s2c communication, which is not a great thing since in many cases it assumes single source of truth, which potentially puts huge load on more popular instances.
I think a quick and dirty hack to this could be the following - each linked instance may maintain cache of announces (so there would be benefit of just forwarding original http signed requests w/o being afraid of malicious actor), which your instance could pull, this way you could populate your mirror without overloading the original source.
Distributed activities propagation though... Let's say there are some design steps involved to make this truly distributed, however I feel like it's possible.
Matrix suffers extremely of this issue. It feels like 95% or more are on matrix.org instance. And all major chat rooms are hosted there too.
I think something like a weekly cap for new registrations as an option would be good. With a hint to other instances.
It's kinda the same issue that some games have, like MMOs. People tend to make new accounts on the biggest and overloaded servers because there is the most activity even though stability could be an issue, or login queues.
But that doesn't make sense on matrix or Lemmy. Because you can still access all content no matter where you are.
Amen on matrix. Federating with most popular rooms on matrix.org basically brings my server to it's knees for a week trying to play catch up between federating users and their profile pictures and decrypting years of chat history. On my first go I made the mistake of trying to join #matrix:matrix.org and I had to wipe the entire server clean to get it back.
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> Because you can still access all content no matter where you are.
If you know how and want to do it. Unfortunately, it isn't the way how most people think.
And fortunately, there's still time for people's minds to change. Federation and decentralization are things that aren't really advertised or mainstream yet so people still don't have a clue what it is. However, we do know how those things work, so I guess it's kind of up to us to help people know about how said things work.
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