Token Bucket Concept
Limit request rates.
Why Rate Limit
Rate limiting caps how many operations happen per unit of time. It protects APIs from abuse, respects third-party quotas, and keeps systems stable under load.
- Prevents overload
- Enforces fair usage
- Honors upstream limits
The Token Bucket Model
Imagine a bucket that holds tokens. Each request must take a token to proceed. Tokens refill at a steady rate. If the bucket is empty, the request waits or is rejected.
All lessons in this course
- Token Bucket Concept
- golang.org/x/time/rate
- Throttling Goroutines
- Backoff and Retry