IntermediatePhone
2 min
API Rate Limiting Basics
APISecurityPerformance
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Interview Question
What is API rate limiting, why is it important, and how is it commonly implemented?
Key Points to Cover
- Rate limiting controls number of requests per client or key
- Prevents abuse, protects backend stability, avoids DDoS
- Implemented via token buckets, leaky buckets, sliding windows
Evaluation Rubric
Defines API rate limiting34% weight
Explains its importance33% weight
Describes common implementation techniques33% weight
Hints
- 💡Think headers like X-RateLimit-Limit and Retry-After.
Potential Follow-up Questions
- ❓How do you handle burst traffic?
- ❓How does rate limiting differ from throttling?
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