Rate Limiter Simulator — Interactive System Design Lab
Send bursts of traffic and watch the token bucket algorithm accept requests while tokens are available and drop them when the bucket is empty. Tune the refill rate and bucket size to see how smoothing behaviour changes — and understand why token buckets are the most common rate limiter in production APIs.
Send traffic bursts and watch the token bucket accept or drop requests in real time.
This free interactive simulation runs directly in your browser — no account needed. Adjust the parameters and watch how the system responds in real time.
Concepts covered
- rate limiter
- token bucket
- API throttling
- traffic shaping
- burst limiting
- request throttling
Read the guide
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- API Gateway — The bouncer, the receptionist, and the translator. It decouples your messy backend microservices from the clean public-facing API.