This tutorial shows you how to use Bree.js as a job scheduler for Node.js applications through a simple Tweet scheduling app.

This article covers what Bree.js is and how you can get started by building a practical application.

What is Bree.js?

Bree.js is a job scheduler for Node.js applications. Job scheduling is the process of executing a piece of code in a scheduled, repetitive manner.

There are other job schedulers available in the Node.js community. However, there are some good reasons why we should probably go with Bree.js over the alternatives.

Why BreeJS?

Worker Threads

Bree.js uses worker threads under the hood. Since worker threads are available in the Node.js LTS version, it’s better to go with threads for background jobs rather than using main threads.

Concurrency, throttling, and retries

Bree.js helps you run the jobs concurrently and with a retries option. Sometimes, you need to retry a specific operation inside the job. You can achieve that using libraries like this, among others.

Install and Setup

Let’s install Bree.js and see how to get started with a simple scheduled job in Node.js:

npm install bree

After that, let’s create a folder called jobs in the root directory, which contains all the background jobs:

bree.start() will start the scheduler and run all the jobs that are configured. Here, we have a jobs array, which contains all the background jobs. The name should match the file name declared in the jobs directory.

For example, here we have a job test. So, the jobs directory should contain a file called test.js to run this job. We can write our logic inside test.js, which runs with the background job.

Once we run our script, we can run our job and execute the logic inside our job script file.

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