timer-wheel

Timer Wheel

timer-wheel is a JavaScript library for efficiently managing a large amount of timed actions. It allows you to schedule actions after a certain delay and then control when to advance and run actions where the delay has passed.

This implementation is designed for larger delays and has a minimum delay of 1000 ms.

import { TimerWheel } from 'timer-wheel';

const wheel = new TimerWheel();
wheel.schedule(() => {
  console.log('Action invoked');
}, 1500 /* ms */)

// Call `advance()` to advance the wheel and run actions
setInterval(() => {
  wheel.advance();
}, 1000);

This library is useful for things like expiring caches with lazy expiration, instead of checking if every cache item should be expired use a wheel to queue removal actions and call advance before every get/set. This is how Transitory implements expiring caches.