How URL shorteners generate 3 trillion unique URLs with just 7 characters
How do URL shorteners support 3.5 trillion unique URLs with just 7 characters?
Turns out, it’s by expanding the way we count, from 0-10 to 0-62!
(Correction: I said 9 characters in the video, but 0-9 has 10 characters. The big numbers must be mushing my brain.)
I referred to this article to learn about this.