this post was submitted on 17 Jun 2023
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Lemmy Support

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How does subscriber count work across lemmy instances? (self.lemmy_support)
submitted 2 years ago* (last edited 2 years ago) by dystop to c/[email protected]
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I just ran into this problem and I was wondering if anyone knew the lemmy software well enough to answer this. I'm seeing different stats on communities depending on which instance I view it from, and I don't know what the true statistics are.

Using a community I moderate ( /c/[email protected] ) as an example:

If i view the sidebar from its home instance: https://lemmy.world/c/maliciouscompliance

It says 91 users / day, 143 users / week, 2.19K subscribers

But if I view it from another instance: https://lemmy.ml/c/[email protected]

It says 42 users / day, 85 users / week, 45 subscribers.

I'm assuming the user count is based on that specific instance, and subscriber count when viewing from another instance is based on subscribers from that instance only (so 45 subscribers using lemmy.ml accounts). But is the subscriber count from the "home" instance the true aggregation of all subscribers across the fediverse, or subscribers from that instance? And if the latter, is there a way to know the true subscriber count for communities across the fediverse?

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[–] [email protected] 2 points 2 years ago (1 children)

As far as I can tell, the subscriber count on the home instance appears to be the total across instances. As a test, I created a community on my instance(custom w/ 1 user) and my friend subscribed to it. The count displayed was 2, which seems to indicate that it tracks everyone who has subscribed to it, whereas the other instances don't have access to detailed information about the community and can't accurately determine that.

[–] dystop 1 points 2 years ago

So i asked the same question on asklemmy and someone who looked at the code told me the opposite. I don't really know enough about lemmy to know which is true, but just fyi: https://lemmy.world/post/210506?scrollToComments=true

[–] [email protected] 1 points 2 years ago (1 children)

The subscription amount on the home instance is the combined amount from all instances. The amount you see on other instances, is the amount from that instance subscribed.

[–] dystop 1 points 2 years ago

So i asked the same on asklemmy and someone who looked at the code told me the opposite. I don't really know enough about lemmy to know which is true, but just fyi: https://lemmy.world/post/210506?scrollToComments=true