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Indeed. YT has a much different problem, which is to determine which video is going to go viral, and then transcode it into popular formats when it does.

In comparison, we pre-transcode everything to exacting standards, so all our CDN has to do is serve is static files.

I don't talk directly about Youtube, but also serving Disney, hula, but ESPECIALLY national/continental portals like Arte.tv, Play-SRF, ARD-Mediathek etc.

I wonder how much of YT traffic is the "big" (say >200k viewers in a month) vs the small guys.

But yeah, once your hot data size exceeds cache byebye efficiency

One hard part is that on the youtube side, most views occur within the first 48 hours or so and a good fraction occur within the first 6. With netflix, they have a catalogue of ~5000 videos and gets <200 new per month. Youtube has around 30k channels with more than 500k subscriptions, so that's somewhere around 30k videos per week.