FAANG / Big Tech interview question · Most asked
Design a URL shortener like bit.ly.
Summary
Clarify read/write ratio, generate unique short codes (hash or base62 counter), store mappings in a DB/KV store, add caching, handle collisions, and discuss analytics and redirects.
Longer Answer
Clarify read/write ratio, generate unique short codes (hash or base62 counter), store mappings in a DB/KV store, add caching, handle collisions, and discuss analytics and redirects. Classic system design: uniqueness, scale, and caching.
Key Points
- Clarify read/write ratio, generate unique short codes (hash or base62 counter), store mappings in a DB/KV store, add caching, handle collisions, and discuss analytics and redirects
- Classic system design: uniqueness, scale, and caching
- Relevant areas: System Design, Urls
- Use the answer to connect the concept back to a realistic production or interview scenario for 'Design a URL shortener like bit.ly.'
Comparison / Tradeoffs
| Aspect | Notes |
|---|---|
| Core idea | Clarify read/write ratio, generate unique short codes (hash or base62 counter), store mappings in a DB/KV store, add caching, handle collisions, and discuss analytics and redirects. |
| Practical tradeoff | Classic system design: uniqueness, scale, and caching. |
Explanation
Summary
Classic system design: uniqueness, scale, and caching.
Longer Answer
Classic system design: uniqueness, scale, and caching. Focus on the practical implications across System Design, Urls.
Key Points
- Classic system design: uniqueness, scale, and caching
- Focus on the practical implications across System Design, Urls
- Relevant areas: System Design, Urls
- Use the answer to connect the concept back to a realistic production or interview scenario for 'Design a URL shortener like bit.ly.'
Comparison / Tradeoffs
| Aspect | Notes |
|---|---|
| Core idea | Classic system design: uniqueness, scale, and caching. |
| Practical tradeoff | In an interview, relate 'Design a URL shortener like bit.ly.' to implementation decisions, tradeoffs, and operational impact. |
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