Definition:Rate Limiting
Rate Limiting is a traffic control technique that restricts the number of API requests a client can submit within a defined timeframe.
Detailed Technical Explanation
Business Perspective
Rate limiting prevents API abuse, brute-force attacks, and server crashes during heavy traffic surges.
Technical Perspective
Returns `HTTP 429 Too Many Requests` response status when client request rates exceed configured thresholds.
Real-World Example
Limiting login API endpoints to 5 attempts per minute per IP address to block brute-force password guessing.
Common Architectural Mistakes
- ✗In-Memory Rate Limiting on Distributed Nodes: Storing rate counters in single process memory instead of a shared Redis instance.
Ecosystem Integration
Frequently Asked Questions
What is the token bucket algorithm?
An algorithm where API tokens accumulate at a fixed rate, allowing temporary bursts while enforcing average request limits.
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