modules | next | Celery 2.1.4 documentation » This document describes an older version of Celery (2.1). For the latest stable version please go here. Celery - Distributed Task Queue Contents: Getting documentation » This document describes an older version of Celery (2.1). For the latest stable version please go here. Getting Started Release: 2.1 Date: February 04, 2014 Introduction Overview Example Features Celery 2.1.4 documentation » Getting Started » This document describes an older version of Celery (2.1). For the latest stable version please go here. Introduction Version: 2.1.4 Web: http://celeryproject

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2 User Guide 13 2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contents 1 Celery Documentation, Release 2.1.4 2 Contents CHAPTER 1 Getting Started Release 2.1 Date February 04, 2014 1.1 Introduction Version 2.1.4 Web http://celeryproject.org/ Download http://pypi Chapter 1. Getting Started CHAPTER 2 User Guide Release 2.1 Date February 04, 2014 2.1 Overview • Tasks • Workers • Monitoring • Routing Figure 2.1: Figure 1: Worker and broker nodes. To use Celery you

the FAQ. 3 Celery Documentation, Release 4.2.1 4 Chapter 1. Getting Started CHAPTER 2 Contents 2.1 Copyright Celery User Manual by Ask Solem Copyright © 2009-2016, Ask Solem. All rights reserved captured by tools like Flower, and celery events to monitor the cluster. Snapshots New in version 2.1. Even a single worker can produce a huge amount of events, so storing the history of all events on GitHub branch2.5-archived • GitHub branch2.4-archived • GitHub branch2.3-archived • GitHub branch2.1-archived • GitHub branch2.0-archived • GitHub branch1.0-archived Feature branches Major new features

captured by tools like Flower, and celery events to monitor the cluster. Snapshots New in version 2.1. Even a single worker can produce a huge amount of events, so storing the history of all events on 3-archived [https://github.com/celery/celery/tree/2.3-archived] GitHub branch2.1-archived [https://github.com/celery/celery/tree/2.1-archived] GitHub branch2.0-archived [https://github.com/celery/celery/tree/2 versions 2.0 and above includes a new persister, that’s tolerant to out of memory errors. RabbitMQ 2.1 or higher is recommended for Celery. If you’re still running an older version of RabbitMQ and experience

(stable) 14 Chapter 1. Getting Started CHAPTER 2 User Guide Release 1.0 Date February 04, 2014 2.1 Tasks A task is a class that encapsulates a function and its execution options. Given a function create_user you have to retry manually, it’s not something that happens automatically. • default_retry_delay 2.1. Tasks 17 Celery Documentation, Release 1.0.6 (stable) Default time in seconds before a retry of remote_addr=remote_addr) return HttpResponseRedirect(post.get_absolute_url()) else: form = CommentForm() 2.1. Tasks 19 Celery Documentation, Release 1.0.6 (stable) context = RequestContext(request, {"form":

Started CHAPTER 2 User Guide Release 2.3 Date February 04, 2014 2.1 Overview • Tasks • Workers • Monitoring • Routing Figure 2.1: Figure 1: Worker and broker nodes. To use Celery you need at least like events and broadcast com- mands. 2.9.2 Workers celeryctl: Management Utility New in version 2.1. celeryctl is a command line utility to inspect and manage worker nodes (and to some degree tasks) –destination argument: $ celeryctl inspect -d w1,w2 reserved Django Admin Monitor New in version 2.1. When you add django-celery to your Django project you will automatically get a monitor section as

text. 12 Chapter 1. Getting Started CHAPTER 2 User Guide Release 2.0 Date February 04, 2014 2.1 Tasks • Basics • Default keyword arguments • Logging • Retrying a task if something fails – Using MyTask(Task): default_retry_delay = 30 * 60 # retry in 30 minutes def run(self, x, y, **kwargs): try: ... 2.1. Tasks 15 Celery Documentation, Release 2.0.3 (stable) except Exception, exc: self.retry([x, y] default=False, editable=False) class Meta: verbose_name = _("comment") verbose_name_plural = _("comments") 2.1. Tasks 17 Celery Documentation, Release 2.0.3 (stable) In the view where the comment is posted, we

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2 User Guide 13 2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Started CHAPTER 2 User Guide Release 2.2 Date February 04, 2014 2.1 Overview • Tasks • Workers • Monitoring • Routing Figure 2.1: Figure 1: Worker and broker nodes. To use Celery you need at least like events and broadcast com- mands. 2.9.2 Workers celeryctl: Management Utility New in version 2.1. celeryctl is a command line utility to inspect and manage worker nodes (and to some degree tasks)

User Guide Release 2.5 Date February 04, 2014 2.1 Overview • Tasks • Workers • Monitoring • Routing • Ecosystem – Kombu – cyme – celerymon Figure 2.1: Figure 1: Worker and broker nodes. To use Celery like events and broadcast com- mands. 2.9.2 Workers celeryctl: Management Utility New in version 2.1. celeryctl is a command line utility to inspect and manage worker nodes (and to some degree tasks) –destination argument: $ celeryctl inspect -d w1,w2 reserved Django Admin Monitor New in version 2.1. When you add django-celery to your Django project you will automatically get a monitor section as

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2 User Guide 19 2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . User Guide Release 2.4 Date January 12, 2016 2.1 Overview • Tasks • Workers • Monitoring • Routing • Ecosystem – Kombu – cyme – celerymon Fig. 2.1: Figure 1: Worker and broker nodes. To use Celery like events and broadcast com- mands. 2.9.2 Workers celeryctl: Management Utility New in version 2.1. celeryctl is a command line utility to inspect and manage worker nodes (and to some degree tasks)