Rate limiters control API request frequency to prevent abuse and manage costs. This guide implements an in-memory rate limiter for Next.js using the fixed window algorithm, tracking requests by unique identifiers and blocking excess traffic with 429 responses. The implementation stores usage data in a Map, automatically clears
Table of contents
Benefits of Rate LimitersHow Rate Limiters WorkRate Limiting AlgorithmsHow to Build an In-Memory Rate LimiterThe Front EndHow to Load Test the Rate Limiter for Resilience with ArtilleryConclusionSort: