I did a search from shitjustworks for “reddit die” and did not find https://lemmy.world/c/watchredditdie so I made https://sh.itjust.works/c/watchredditdie (unnecessarily). This should really not happen. When someone makes a community there should be a “ping” sent out to notify all other federated instances.
And from what I know, if I post to !sh.itjust.works/c/watchredditdie only users on sh.itjust.works will see the posts until other people from other instances randomly come across it somehow and subscribe? This really needs to be improved.
The devs actually talked about this in the AMA from a couple of days ago. Sounds like the current plan is to have all federating servers send their entire list of communities to each other on a regular basis.
The other thing that I think is worth mentioning is Lemmy Community Boost which is basically a bot that serves the same purpose.
https://boost.lemy.lol <- link to it, doesnt work for instances not connected to it like lemmy.world but theres still ~ 26 major ones