this post was submitted on 17 Jun 2023
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Technology
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Instances hold copies of other instances' communities? I thought it was simply an API call to the other server. Not an expert, tho.
Yep, on regular intervals your instance asks for the latest data from the remote community and that's what it serves to its users. So it doesn't matter if 1 person or 100 are subbed on asingle remote, it's the same number of calls.
Is there a reason for working like this and not simply be a portal to the other instance's community?
Probably for reliability and stability — otherwise, every view from every federated instance would create a new request to the hosting instance. The protocol itself would basically DDoS smaller instances. Also you can still read the cached version on your home instance if the remote instance is temporarily down.