slow-it-down

A rate limiter for Express written in TypeScript.

Usage

const slowDown = require('slow-it-down')
const app = express()
 
app.use(slowDown({
  burst: 25, // Maxiumum number of concurrent requests
  rate: 1, // 1 requests/second
  ip: true,
}))

slowDown(config)

Creates a new rate limiter, accepts the following:

name	default	type	description
burst	-	number	Number of requests a user can have
rate	-	number	Rate at which those requests refill
ip	true	boolean	Throttle on IP
user	false	boolean	Throttle using user on req
xff	false	boolean	Throttle using X-Forwarded-For
overrides	-	object	Overrides for individual keys
tokensTable	tokenBucket	Object	In-memory storage engine
maxKeys	10000	number	Maximum distinct throttling keys

Testing

yarn test