DesignIntermediate~25 min
Rate Limiter Design
api-designdistributed-systemsalgorithmssecurity
Problem
Design a rate limiter for APIs.
Requirements
- Limit requests per client
- Support multiple rate limit rules (per minute, per hour, etc.)
- Operate in distributed environments
- Maintain low latency
Constraints
- 1 million requests per second
- Latency: Decision within 1ms
- 99.99% availability
What to Answer
- Requirements/Assumptions: Clarify the granularity and scope of rate limiting
- API/Data Model: Design rate limit rule definitions and storage
- Components: Explain algorithm selection and implementation approach
- Scaling/Fault Tolerance: Explain consistency in distributed environments and behavior during failures
- Trade-offs: Discuss advantages and disadvantages of each algorithm
Constraints
- 1 million requests per second
- Decision within 1ms
- 99.99% availability
Your Answer
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Model Answer
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