Sessions at EuroPython 2011 about Celery

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Tuesday 21st June 2011

Wednesday 22nd June 2011

  • Playing tasks with Django-Celery

    by Mauro Rocco

    Celery is an open source task queueing system based on distributed message passing.

    I will talk about the tools that Celery offers for task distribution and how to monitor and manage the system using a Django web interface.
    This talk will also focus on how we use Celery at Jamendo and our real solutions to some common issues you may encounter when developing a back-office based on Celery.

    The talk will cover the following topics:

    -- A brief overview of Celery and the AMPQ protocol.
    AMPQ protocol overview
    Celery introduction
    Celery, RabbitMQ code examples

    -- The impact of Celery on the Jamendo work-flow; examples with real tasks.
    Here I will talk about the Jamendo back-office infrastructure and some of our common tasks. I will discuss the improvements made by introducing a new back-office system based on Celery.
    I will show some code snippets and go over some real scenarios.

    -- Overview of the Django Celery admin interface and some Jamendo extensions
    Let's talk about the Django-Celery interface that allows one to monitor or schedule tasks directly from the Django admin.
    I will explain which common additional features are necessary and how to add them.

    -- Common "gotchas" we encountered while working with Celery and how we solved them.
    - Global task locks
    - Centralized logging: be able to read all the logs of all celery workers on different servers and filter them for real-time debugging

    At 3:30pm to 4:30pm, Wednesday 22nd June

    Coverage video