Delayed

添加到队列中的作业通常会在有工作人员可以调度它们时被快速处理。 However, it is also possible to add a delay parameter so that jobs will wait at least that amount of time before being processed. Note that this does not guarantee that the job will be processed at that exact delayed time, it depends on how busy the queue is when the time has passed and how many other delayed jobs are scheduled at that exact time.

{% hint style="info" %} Delayed jobs will only be processed if there is at least one QueueScheduler instance configured in the Queue. {% endhint %}

This is an example on how to add delayed jobs:

TypeScript

import { Queue, QueueScheduler } from "bullmq";

const myQueueScheduler = new QueueScheduler("Paint");
const myQueue = new Queue("Paint");

// Add a job that will be delayed at least 5 seconds.
await myQueue.add("house", { color: "white" }, { delay: 5000 });