Say a popular creator uploads a 10 minute video. Once it’s uploaded a thousand users play the video simultaneously. Is the video copied to multiple drives? Or can servers stream a single file to multiple users?
In: 6
Yes to both questions. YouTube has a content delivery network (CDN) that consists of hundreds of clusters of hundreds of servers using the same disk. When you upload a video it gets copied to each disk, when people want to watch it they redirected to the closest cluster.
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