this post was submitted on 14 Jun 2023
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Technology
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But what happens when the instance hosting the community goes down? Are all external instances still able to participate in that community?
No. The "single source of truth" is the instance hosting the community. If it goes down the community itself goes down with the ship. The only way to prevent it is to have a IT infrastructure that can provide redundancy
Yeah, that isn't good.
having a redundant system is feasible (I'm just a dev, not an architect so don't take my words for granted) but it have to be designed and putted together ... and prices are gonna skyrocket
If it's just a temporary outage, whatever the mirror has received prior to the outage will be shown to users on that other instance but only local interactions for that instance will update it, when it comes back up, things like votes and comments will be synchronized again across all of the instances.
For permanent outages, the community will just need to be started again on a new instance.
But they could pick up where the now defunct community left off, right? Like, the cached copy from another server could be imported on a new server elsewhere?
That functionality doesn't currently exist, but migration of communities is something that's being actively talked about for development.
Reading this and trying to visualize the big picture, I think this is where kbin's magazine is going to win out in the end
Out of curiosity, how is kbin's magazine system designed to avoid this problem?
Ok, from what I understand now, a magazine can follow tags or keywords, which will populate the magazine. So no matter where in the fediverse something is posted, it will show up in the magazine.
But then if the instance hosting the magazine goes down YEAH OK I GET IT NOW
It’s not