@directus/pressure NPM

@directus/pressure

Pressure based rate limiter

Description

This package exports a pressure based rate limiter that is used within Directus, an open-source headless CMS.

For more information about Directus, visit the official website.

Installation

npm install @directus/pressure

Usage

Standalone

The pressure monitor is a class that can be used anywhere:

import { PressureMonitor } from '@directus/pressure';

const monitor = new PressureMonitor({
	maxEventLoopUtilization: 0.8,
});

monitor.overloaded; // true | false

Express

The library also exports an express middleware that can be used to throw an Error when the pressure monitor reports overloaded:

import express from 'express';
import { handlePressure } from '@directus/pressure';

const app = express();

app.use(
	handlePressure({
		maxEventLoopUtilization: 0.8,
	}),
);