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by crazygringo 4826 days ago
And I'm thinking about complex sites, not simple serve-up-a-page-and-that's-it.

A cache gets refreshed or added to. A user's viewcount is incremented. A new statistic is calculated and then stored. An item is marked as viewed. And these are all just on a GET.

On complex sites with a logged-in user, side effects are pretty much the norm.