django-celery

Topics in the source

• Django + Celery Async Task Patterns
• When to Activate
• Project Setup
• Installation
• celery.py — App Entrypoint
• Django Settings
• Running Workers
• Task Design Patterns

Production-grade patterns for background task processing in Django using Celery with Redis or RabbitMQ. Adding background jobs or async processing to a Django app Implementing periodic/scheduled tasks Offloading slow operations (email, PDF generation, API calls) from request cycle Setting up Celery Beat for cron-like scheduling Debugging task failures, retries, or queue backlogs Writing tests for Celery tasks Design tasks so they can safely run multiple times with the same inputs: | Check | Setting | |-------|---------| | Worker restarts on crash | supervisord or systemd unit | | CELERYTASKACKSLATE = True | Re-queue tasks on worker crash | | CELERYWORKERPREFETCHMULTIPLIER = 1 | Fair distribution of long tasks | | Separate queues per priority | -Q default,highpriority,lowpriority | | CELERYTASKSOFTTIMELIMIT set | Graceful timeout before hard kill | | Sentry integration | Capture all taskfailure signals | | Flower or other monitor | Visibility into queue depths | | Beat runs on single node only | Prevents duplicate scheduled task execution | django-patterns — ORM, service layer, and project structure django-tdd — Testing Django models, views, and services python-testing — pytest conf

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