Flowcharts & Processes

Token Bucket Rate Limiting Architecture

Flowcharts & Algorithms diagram · made in Skemio

Flowchart depicting token bucket rate limiter calculating refill tokens, checking balance, and accepting or rejecting requests.
Flowchart depicting token bucket rate limiter calculating refill tokens, checking balance, and accepting or rejecting requests.
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What it shows

  • Tokens accumulate smoothly over time up to a configured bucket capacity.
  • Requests consume tokens immediately and execute without artificial delay.
  • Empty buckets reject excess requests with HTTP 429 until tokens replenish.

The takeaway

Token buckets permit instantaneous traffic bursts while enforcing strict long-term consumption limits.

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