QuestionsDesign a URL Shortener

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Design a URL Shortener

Design a service like bit.ly that takes a long URL and returns a short alias. The short URL should redirect to the original URL when visited.

Functional

▸Generate a unique short URL for a given long URL
▸Redirect short URL to the original long URL
▸Support custom aliases
▸Track click analytics (count, timestamp, location)
▸URLs expire after a configurable TTL

Non-Functional

▸100M URLs created per day (~1200/sec writes)
▸10B redirects per day (~115K/sec reads)
▸Read:write ratio 100:1
▸Redirection latency < 10ms (p99)
▸99.99% availability
▸Short URLs are 7 characters (base62)

Add at least 2 components to run