> 2. Not all requests are created equal. 20 requests a second for the same static HTML file? No problem. But if you have, say, a release page for an open source project with binary download links for all past versions for multiple platforms, each one being a multi megabyte blob, and a scraper starts hitting these links, you will run into bandwidth problems very quickly, unless you live in a utopia where bandwidth is free.

All of this is (and should) cached on a cdn. You can go 1000 QPS on this in that config.