Design a URL Shortener · System Design Interview

Design a URL ShortenerDesign a service that turns a long URL into a short one and redirects visitors who follow it.What it has to do

Create a short link for a given URL

Redirect a short link to its original URL

Short links never expire unless the creator deletes them

Scale

New links per day: 10 million

Redirects per day: 1 billion

Out of scope

User accounts and authentication

Billing

Custom domains

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