How do communities work across servers? For instance, I registered my account on server A, and create a community named MyCommunity on Server A. Someone who’s registered on Server B can access MyCommunity by going to !MyCommunity@ServerA.
Now if someone else on Server B decides to create a community also called MyCommunity on Server B, I could access that by going to !MyCommunity@ServerB.
My question is, with the MyCommunity communities ever sync across Server A and Server B? Or will they remain completely separated since they’re on different servers? Will things posted to !MyCommunity@ServerA ever show up for people that have only subscribed to !MyCommunity@ServerB, or are these kept completely separate?
This is a case where the email analogy is perfect. In your question you create an address “email@gmail.com” and someone else creates an address “email@yahoo.com.” Both accounts will be able to send email to each other and anyone else can send or receive email to/from both addresses. But email sent to “email@gmail.com” will not show up at “email@yahoo.com” nor vice versa.
It makes me think of Discord servers. There are lots of channels that share the same name but they are all on different servers. You can visit any and all of them if you like but they are not connected.
Where this analogy fails is you cannot see or send messages without joining the server. And on Lemmy you can.
They’ll “sync” in that you can access them on either instancs, but as separate communities.
!MyCommunity@ServerA and !MyCommunity@ServerB are different communities hosted on different servers. Some people can see both, some can only see one or the other. They likely have different rules, communities, and culture.
There are a few tickets to improve/implement this, but, for now, the communities are completely separate.
https://github.com/LemmyNet/lemmy/issues/3100 https://github.com/LemmyNet/lemmy/issues/3057 https://github.com/LemmyNet/lemmy/issues/3071
So, look for to improvements in the future.
To be fair, my understanding of the entire internet is that the entire point is that they remain separate. They can sync on their own if they wanna, but they are still separate instances organizationally and logically, as they should.
After all, if that was not the case, Lemmy would be a ripe space for cybersquatting and “domain” hijacking. I could just go to a random server, or spin my own in just 30 minutes, create !PineapplePizza@MyOwnServer.tld and BAM! Now PineapplePizza is granted to me across the entire Fediverse. I become the ultimate master.
Sometimes the analogy to email is used. JohnMastodon@protonmail.com does not need to be the same user (and authority) as JohnMastodon@mailbox.org ; in fact, the entire system relies on the expectation that they “should” not be the same.
