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