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submitted 9 months ago* (last edited 9 months ago) by BiggestBulb@kbin.run to c/nostupidquestions@lemmy.world

For example, if I (on kbin.run - which is Mbin, but for the purposes of this let's just assume it's Kbin) go to a random magazine on kbin.social, I will often see a prompt that the magazine may be incomplete and that I should visit the original instance for all the content.

Why doesn't the request to that magazine automatically trigger a "pull" from that instance for that magazine, or at least cause it to check if the number of threads is the same (and conditionally pull on that)? I would think by pulling the changes then, magazines would never be out-of-date.

I get that it would be a lot heavier of a load on the servers, but in combination with good caching techniques (maybe setting a time of 1 day or something until the next pull occurs, idk) I feel like that could be mitigated.

Is this maybe an implementation detail of ActivityPub?

Thank you!

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[-] Bitrot@lemmy.sdf.org 4 points 9 months ago* (last edited 9 months ago)

I don't think it's usually out of date that's the issue, but rather history. Generally activitypub instances don't get historical data, they get data from the point someone subscribes, so you may be missing old threads and comments on your local instance that exist on the hosting instance. If nobody is subscribed your instance may not be getting new content though.

That's one reason there are tools available like bots that "mass subscribe" to content on various instances when you set up a new one, otherwise it will stay pretty empty.

this post was submitted on 19 Jan 2024
34 points (94.7% liked)

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