优先

Jobs can also include a priority option. Using priorities, job's processing order will be affected by the specified priority instead of following a FIFO or LIFO pattern.

{% hint style="warning" %} Adding prioritized jobs is a slower operation than the other types of jobs, with a complexity O(n) relative to the number of jobs waiting in the Queue. {% endhint %}

Priorities goes from 1 to MAX_INT, whereas lower number is always higher priority than higher numbers.

TypeScript

import { Queue } from "bullmq";

const myQueue = new Queue("Paint");

await myQueue.add("wall", { color: "pink" }, { priority: 10 });
await myQueue.add("wall", { color: "brown" }, { priority: 5 });
await myQueue.add("wall", { color: "blue" }, { priority: 7 });

// The wall will be painted first brown, then blue and
// finally pink.