this post was submitted on 30 Jun 2023
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The problem is the thing has already been federated. Changing the ID in the db will appear to the rest of the fediverse as new things, not as those same things.
ah ok. well then there would need to be a deeper change and all instances would need to update. have a field for the ID of the instance itself, and a field for the domain. or something like that. would that work?
I think it would need to be a mechanism similar to how user moves are handled where the old thing sticks around forever but has a field that says "the new one is over here" and then the new one has a field that says "yes, I am the same as that old one". At least I think that's how e.g. mastodon handles moves of users (just the person/actor, not any of their content. AFAIK nothing in the fediverse can do something like this with anything other than a person/actor at the moment)
OR, after changing the ID, have the instance publish a "domain_change_notification" that all federated instances would be listening for and then they would update their data.