SMRTR ProgrammingJan 11, 2026Daily.dev

How to Build an In-Memory Rate Limiter in Next.js

SMRTR summary

Developers can build an in-memory rate limiter for Next.js applications to prevent API abuse and control costs. This tutorial covers rate limiting algorithms, implements a fixed window approach that tracks client requests in memory, and demonstrates load testing with Artillery to verify the limiter blocks excessive requests while maintaining low latency under high traffic.

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