This document describes Celery 2.4. For development docs, go here.

User Guide

Release:2.4 Date:January 12, 2016

• Overview
  • Tasks
  • Workers
  • Monitoring
  • Routing
  • Ecosystem
• Tasks
  • Basics
  • Context
  • Logging
  • Retrying a task if something fails
  • Task options
  • Task names
  • Decorating tasks
  • Task States
  • Creating custom task classes
  • How it works
  • Tips and Best Practices
  • Performance and Strategies
  • Example
• Executing Tasks
  • Basics
  • ETA and countdown
  • Expiration
  • Serializers
  • Connections and connection timeouts.
  • Routing options
  • AMQP options
• Workers Guide
  • Starting the worker
  • Stopping the worker
  • Restarting the worker
  • Concurrency
  • Persistent revokes
  • Time limits
  • Max tasks per child setting
  • Remote control
  • Inspecting workers
• Periodic Tasks
  • Introduction
  • Entries
  • Crontab schedules
  • Starting celerybeat
• Sets of tasks, Subtasks and Callbacks
  • Subtasks
  • Task Sets
  • Chords
• HTTP Callback Tasks (Webhooks)
  • Basics
  • Django webhook example
  • Ruby on Rails webhook example
  • Executing webhook tasks
• Routing Tasks
  • Basics
  • AMQP Primer
  • Routing Tasks
• Monitoring and Management Guide
  • Introduction
  • Workers
  • RabbitMQ
  • Munin
  • Events
• Optimizing
  • Introduction
  • Ensuring Operations
  • General Settings
  • Worker Settings
• Concurrency
  • Concurrency with Eventlet
• Signals
  • Basics
  • Signals