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API Rate Limiting Basics
Protect APIs from overload
This guide covers common rate limiting strategies, token bucket concepts, HTTP headers for limits, client backoff guidance, and monitoring to tune thresholds.
- api
- rate limiting
- token bucket
- throttling
- backoff
Pick a strategy
Use token bucket or leaky bucket for smoothing; apply per-API key or IP as needed.
Set limits and responses
Define reasonable thresholds and return 429 with Retry-After hints.
Expose headers
Include remaining quota and reset timestamps so clients can adapt.
Monitor and adjust
Track spikes, error rates, and abusive patterns; tune limits and add safelists where justified.
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