Practical
API Rate Limit Calculator
Design API rate limits and calculate per-user allowances from total capacity
API rate limiting controls how many requests a client can make within a given time window. It protects servers from abuse and ensures fair usage across all consumers.
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Tip: Implement exponential backoff with jitter in your API client - retry after 2s, 4s, 8s with random jitter to avoid thundering herd problems.
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Fun Fact
Twitter’s API rate limit reduction from 150 to 60 requests/hour in 2013 immediately caused many social media apps to fail.
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