This document describes the current stable version of Celery (5.2). For development docs, go here.

Celery - Distributed Task Queue

Celery is a simple, flexible, and reliable distributed system to process vast amounts of messages, while providing operations with the tools required to maintain such a system.

It’s a task queue with focus on real-time processing, while also supporting task scheduling.

Celery has a large and diverse community of users and contributors, you should come join us on IRC or our mailing-list.

Celery is Open Source and licensed under the BSD License.

Donations

This project relies on your generous donations.

If you are using Celery to create a commercial product, please consider becoming our backer or our sponsor to ensure Celery’s future.

Getting Started

• If you’re new to Celery you can get started by following the First Steps with Celery tutorial.

• You can also check out the FAQ.

Contents

• Copyright

• Getting Started
  • Introduction to Celery
  • Backends and Brokers
  • First Steps with Celery
  • Next Steps
  • Resources
• User Guide
  • Application
  • Tasks
  • Calling Tasks
  • Canvas: Designing Work-flows
  • Workers Guide
  • Daemonization
  • Periodic Tasks
  • Routing Tasks
  • Monitoring and Management Guide
  • Security
  • Optimizing
  • Debugging
  • Concurrency
  • Signals
  • Testing with Celery
  • Extensions and Bootsteps
  • Configuration and defaults
  • Documenting Tasks with Sphinx

• Django
• Community Resources
• Tutorials
• Frequently Asked Questions
• Change history
• What’s new in Celery 5.2 (Dawn Chorus)
• API Reference
• Internals
• History
• Glossary

Indices and tables

• Index

• Module Index

• Search Page