What happens if the instance which hosts the community is down but other instances are online? I just made a post to a community on an instance that doesn’t exist anymore, but will other instances get that post, or is it reliant on the instance which hosts the community coming back online?
Across all the federated nodes? I’d take that competition, that’s the point of the fediverse after all
What’s really cool is that content isn’t lost. As soon as those nodes come back, they get to fast-forward through all those queued updates.
What happens if the instance which hosts the community is down but other instances are online? I just made a post to a community on an instance that doesn’t exist anymore, but will other instances get that post, or is it reliant on the instance which hosts the community coming back online?
That post will only exist on your instance. Federation out to other instances would have to happen via the instance that community is on.
You may think of the community as down in that case, but overall the service is more resilient than a single community.