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by bscphil 1285 days ago
> I mean, let's assume you post something popular,

The issue is that there's no federated "popularity" metric. Every user that has followers on 17,000 servers has every single one of their posts pushed to all 17,000. Automatically and immediately, not on demand. Posts by users with only a few followers will occasionally go viral, but an outsize portion of the load is due to "whales".