Paul's Sliding-Window Rate Limiter

Efficiently rate limit calls using a sliding window algorithm. Stores windows in memory (no redis dependency, like every other rate limiting library out there).

Uses the "Sliding Window" algorithm described in this article.

Usage

npm i pauls-sliding-window-rate-limiter

1import { RateLimiter } from 'pauls-sliding-window-rate-limiter'
2
3const rl = new RateLimiter({
4  limit: 100, // how many hits allowed in the window? default 100
5  window: 1e3 // how big is the window? (default 1000ms)
6})
7
8if (rl.hit('key')) {
9  // within the limit
10} else {
11  // limit exceeded
12}

LICENSE

Copyright Paul Frazee 2021

MIT license