If no one on your instance follows that community, you’re not going to get new posts for it. There are some cases where history / chaining is fetched, for example, lets say you receive a comment, and the parent commenter is from another instance. Or someone from a third instance comments on a post of a community you’re subscribed to. As long as that parent commenter is from an instance thats allowed (IE in the allowlist or open federation), it will pull it.
Edit: to answer your specific quesion, no there is no chaining, it is an all-connects-to-all type of network (with the allow-list as the limiting factor). Other Fediverse (ActivityPub) software operates similarly, except that you can subscribe to any other instance (Unless on the block-list) and then that instance gets added to the instance wide allow-list of your instance automatically.
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@sirl1on@lemmy.ml poVoq got it but there’s several things going on.
If no one on your instance follows that community, you’re not going to get new posts for it. There are some cases where history / chaining is fetched, for example, lets say you receive a comment, and the parent commenter is from another instance. Or someone from a third instance comments on a post of a community you’re subscribed to. As long as that parent commenter is from an instance thats allowed (IE in the allowlist or open federation), it will pull it.
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OK, makes sense. I don’t envy you keeping track of all those edge cases…
Thanks for working on Lemmy and taking time to answer questions!
No probs.
Thanks for calrifying this! now I understand :)