pg boss

Queueing jobs in Postgres from Node.js like a boss.

async function readme() {
  const PgBoss = require('pg-boss');
  const boss = new PgBoss('postgres://user:pass@host/database');

  boss.on('error', console.error)

  await boss.start()

  const queue = 'readme-queue'

  await boss.createQueue(queue)

  const id = await boss.send(queue, { arg1: 'read me' })

  console.log(`created job ${id} in queue ${queue}`)

  await boss.work(queue, async ([ job ]) => {
    console.log(`received job ${job.id} with data ${JSON.stringify(job.data)}`)
  })
}

readme()
  .catch(err => {
    console.log(err)
    process.exit(1)
  })

pg-boss is a job queue built in Node.js on top of PostgreSQL in order to provide background processing and reliable asynchronous execution to Node.js applications.

pg-boss relies on SKIP LOCKED, a feature built specifically for message queues to resolve record locking challenges inherent with relational databases. This provides exactly-once delivery and the safety of guaranteed atomic commits to asynchronous job processing.

This will likely cater the most to teams already familiar with the simplicity of relational database semantics and operations (SQL, querying, and backups). It will be especially useful to those already relying on PostgreSQL that want to limit how many systems are required to monitor and support in their architecture.

Summary

• Exactly-once job delivery
• Create jobs within your existing database transaction
• Backpressure-compatible polling workers
• Cron scheduling
• Queue storage policies to support a variety of rate limiting, debouncing, and concurrency use cases
• Priority queues, dead letter queues, job deferral, automatic retries with exponential backoff
• Pub/sub API for fan-out queue relationships
• Raw SQL support for non-Node.js runtimes via INSERT or COPY
• Serverless function compatible
• Multi-master compatible (for example, in a Kubernetes ReplicaSet)

Requirements

• Node 20 or higher
• PostgreSQL 13 or higher

Installation

# npm
npm install pg-boss

# yarn
yarn add pg-boss

Documentation

• Docs

Contributing

To setup a development environment for this library:

git clone https://github.com/timgit/pg-boss.git
npm install

To run the test suite, linter and code coverage:

npm run cover

The test suite will try and create a new database named pgboss. The config.json file has the default credentials to connect to postgres.