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What it is
A fixed-window rate limiter divides time into equal slots and counts requests within each. When a slot’s count reaches the cap, further requests are rejected until the next slot begins, at which point the counter resets to zero.
On the public ring
The Credit Corp public ring uses a fixed 60-second window with a cap of 60 requests per IP per route. It is simple and predictable: you know the reset boundary from the Retry-After header. The trade-off of any fixed window is a possible burst at the slot boundary; the public ring’s modest cap makes that a non-issue in practice.
Frequently asked questions
How is fixed-window different from a sliding window?
A fixed window resets on hard boundaries; a sliding window measures the trailing N seconds continuously. The public ring uses fixed windows for simplicity and predictability.
Funding for UK limited companies
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