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URL Shortener System Design: How to Build a Scalable System

URL shorteners seem simple, but designing one at scale introduces several interesting engineering challenges. In this guide, we explore: How URL shortening works Unique short code generation Database and API design Ca

URL shorteners seem simple, but designing one at scale introduces several interesting engineering challenges.

In this guide, we explore:

  • How URL shortening works
  • Unique short code generation
  • Database and API design
  • Caching for fast redirects
  • Scalability and system trade-offs

This is a useful system design problem for developers preparing for technical interviews and learning backend architecture.

📚 Read the complete guide:

URL Shortener System Design

What would you choose for generating unique short URLs: Base62 encoding, hashing, or another approach?

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