API Rate Limit Calculator
Calculate token bucket parameters for API rate limiting: tokens per window, refill rate, and maximum concurrent requests. Design robust API throttling.
How to Use the Rate Limit Calculator
- Enter sustained requests per second.
- Enter burst size (maximum concurrent requests).
- Enter rate limiting window in seconds.
- Click Calculate to get token bucket parameters.
Casos de Uso
- •Configuring API gateways (Kong, AWS API Gateway).
- •Designing rate limiting middleware for REST APIs.
- •Planning capacity for high-traffic API endpoints.
- •Preventing abuse while allowing legitimate burst traffic.
Fórmula
Tokens per window = RPS × window seconds. Refill rate = RPS. Max concurrent = burst size.
Preguntas Frecuentes
What is a token bucket?
Token bucket is a rate limiting algorithm where tokens accumulate up to a burst limit and are consumed by requests.
What is burst size?
Burst size allows short spikes above the sustained rate. Useful for APIs that see occasional traffic bursts.
What is a good rate limit for public APIs?
Common limits: 1000 requests/hour for free tiers, 10,000+/hour for paid. Use sliding window for smoother limiting.