So 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/maliciouscompliance@lemmy.world ) as an example:
If i view the sidebar from this link: https://lemmy.world/c/maliciouscompliance
It says 91 users / day, 143 users / week, 2.19K subscribers
But if I view it from this link: https://lemmy.ml/c/maliciouscompliance@lemmy.world
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?
I am looking for something that goes into technical details from a developer’s perspective. How does the ActivityPub protocol structured, how one app receives data from another (e. g. Lemmy to Mastodon), how does an admin de-federates another instance etc.
You might want to try one of the lemmy dev communities then! You can ask in /c/lemmy@lemmy.ml