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No Vodafone two days ago and now no YouTube. I am amazed at these system wide outages.

I thought YouTube cached all the recommendations fairly locally with a box at the Telco. Clearly this is not the case if it is down for everyone, everywhere.

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Both can be true. There are many moving parts on something like YouTube! (Edit: but yeah, I'm not sure if local caching is really feasible for YT with the huge diversity of content on the platform. Maybe "within 500 miles" is as good as one could expect)

I've never heard that, I think you may be thinking of Netflix and their edge storage appliances.

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