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Sliding Window Rate Limiter

587 words·Updated 2026-07-18·

#system-design#rate-limiting#high-throughput#abuse-prevention

Accompanying Lab

Sliding Window Rate Limiter

An in-memory limiter that stores recent request timestamps per key and computes allow, remaining, and retry-after decisions.

Primary References & Engineering Sources

·[[wiki/arpit-algorithmic-system-design-i]]
·https://redis.io/tutorials/howtos/ratelimiting/
·https://www.rfc-editor.org/rfc/rfc6585
·https://docs.github.com/en/rest/using-the-rest-api/rate-limits-for-the-rest-api

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