Celery website screenshot

Celery

Celery is an open-source distributed task queue for Python. It allows you to run tasks asynchronously in the background, enabling scalable distributed systems with support for multiple message brokers (RabbitMQ, Redis, Amazon SQS) and result backends. Celery provides a rich set of Python programming APIs for defining tasks, composing workflows, scheduling periodic work, executing on workers, and monitoring execution.

8 APIs 0 Features
AsynchronousDistributed SystemsMessage QueueOpen SourcePythonTask Queue

APIs

Celery Task API

Core API for defining and executing distributed tasks in Celery. Supports task decorators, retries, timeouts, rate limiting, and custom task classes.

Celery Application API

Application configuration and initialization API for Celery, used to configure brokers, result backends, serialization, routing, and task discovery.

Celery Canvas API

Canvas is Celery's workflow composition API for building complex task orchestrations using signatures, chains, groups, chords, maps, starmaps, and chunks.

Celery Beat API

Celery Beat is the scheduler for periodic tasks, supporting crontab-style schedules, interval schedules, and solar schedules. It can also be backed by a database scheduler for d...

Celery Worker API

Worker API for executing distributed tasks with configurable concurrency (prefork, gevent, eventlet, solo, threads), autoscaling, remote control, and signal handling.

Celery Result Backend API

Result backend API for storing and retrieving task results and state using backends such as Redis, RPC, database, Memcached, Cassandra, and S3.

Celery Signals API

Signals API for hooking into Celery lifecycle events including task, worker, beat, and consumer signals to build extensions and observability.

Celery Monitoring and Events API

Event streaming and monitoring API for inspecting workers, tasks, and queues. Supports the curses-based celery events monitor and third-party tools such as Flower.

Pricing Plans

Celery Plans Pricing

3 plans

PLANS

Rate Limits

Celery Rate Limits

5 limits

RATE LIMITS

FinOps

Celery Finops

FINOPS

Resources

🔗
Website
Website
🔗
Documentation
Documentation
🔗
Reference
Reference
🚀
GettingStarted
GettingStarted
👥
GitHub
GitHub
🔗
PyPI
PyPI
📄
ChangeLog
ChangeLog
🔗
Community
Community
🔗
Issues
Issues
🔗
Contributing
Contributing
🔗
License
License

Sources

apis.yml Raw ↑
aid: celery
url: https://raw.githubusercontent.com/api-evangelist/celery/refs/heads/main/apis.yml
name: Celery
tags:
- Asynchronous
- Distributed Systems
- Message Queue
- Open Source
- Python
- Task Queue
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
access: Open Source
created: '2024-01-15'
modified: '2026-04-23'
position: Consumer
specificationVersion: '0.19'
description: Celery is an open-source distributed task queue for Python. It allows you to run tasks asynchronously in the
  background, enabling scalable distributed systems with support for multiple message brokers (RabbitMQ, Redis, Amazon SQS)
  and result backends. Celery provides a rich set of Python programming APIs for defining tasks, composing workflows, scheduling
  periodic work, executing on workers, and monitoring execution.
apis:
- aid: celery:celery-task-api
  name: Celery Task API
  tags:
  - Python
  - Task Queue
  - Tasks
  humanURL: https://docs.celeryq.dev/en/stable/userguide/tasks.html
  properties:
  - url: https://docs.celeryq.dev/en/stable/userguide/tasks.html
    type: Documentation
  - url: https://docs.celeryq.dev/en/stable/reference/celery.app.task.html
    type: Reference
  - url: https://docs.celeryq.dev/en/stable/getting-started/
    type: GettingStarted
  description: Core API for defining and executing distributed tasks in Celery. Supports task decorators, retries, timeouts,
    rate limiting, and custom task classes.
- aid: celery:celery-application-api
  name: Celery Application API
  tags:
  - Application
  - Configuration
  humanURL: https://docs.celeryq.dev/en/stable/userguide/application.html
  properties:
  - url: https://docs.celeryq.dev/en/stable/userguide/application.html
    type: Documentation
  - url: https://docs.celeryq.dev/en/stable/reference/celery.html
    type: Reference
  - url: https://docs.celeryq.dev/en/stable/userguide/configuration.html
    type: Configuration
  description: Application configuration and initialization API for Celery, used to configure brokers, result backends, serialization,
    routing, and task discovery.
- aid: celery:celery-canvas-api
  name: Celery Canvas API
  tags:
  - Workflows
  - Chains
  - Groups
  - Chords
  humanURL: https://docs.celeryq.dev/en/stable/userguide/canvas.html
  properties:
  - url: https://docs.celeryq.dev/en/stable/userguide/canvas.html
    type: Documentation
  description: Canvas is Celery's workflow composition API for building complex task orchestrations using signatures, chains,
    groups, chords, maps, starmaps, and chunks.
- aid: celery:celery-beat-api
  name: Celery Beat API
  tags:
  - Scheduling
  - Periodic Tasks
  humanURL: https://docs.celeryq.dev/en/stable/userguide/periodic-tasks.html
  properties:
  - url: https://docs.celeryq.dev/en/stable/userguide/periodic-tasks.html
    type: Documentation
  - url: https://docs.celeryq.dev/en/stable/reference/celery.beat.html
    type: Reference
  description: Celery Beat is the scheduler for periodic tasks, supporting crontab-style schedules, interval schedules, and
    solar schedules. It can also be backed by a database scheduler for dynamic schedules.
- aid: celery:celery-worker-api
  name: Celery Worker API
  tags:
  - Worker
  - Execution
  - Concurrency
  humanURL: https://docs.celeryq.dev/en/stable/userguide/workers.html
  properties:
  - url: https://docs.celeryq.dev/en/stable/userguide/workers.html
    type: Documentation
  - url: https://docs.celeryq.dev/en/stable/reference/celery.worker.html
    type: Reference
  description: Worker API for executing distributed tasks with configurable concurrency (prefork, gevent, eventlet, solo,
    threads), autoscaling, remote control, and signal handling.
- aid: celery:celery-result-api
  name: Celery Result Backend API
  tags:
  - Results
  - State
  - Storage
  humanURL: https://docs.celeryq.dev/en/stable/userguide/tasks.html#result-backends
  properties:
  - url: https://docs.celeryq.dev/en/stable/userguide/tasks.html#result-backends
    type: Documentation
  - url: https://docs.celeryq.dev/en/stable/reference/celery.result.html
    type: Reference
  description: Result backend API for storing and retrieving task results and state using backends such as Redis, RPC, database,
    Memcached, Cassandra, and S3.
- aid: celery:celery-signals-api
  name: Celery Signals API
  tags:
  - Signals
  - Events
  - Extensions
  humanURL: https://docs.celeryq.dev/en/stable/userguide/signals.html
  properties:
  - url: https://docs.celeryq.dev/en/stable/userguide/signals.html
    type: Documentation
  - url: https://docs.celeryq.dev/en/stable/reference/celery.signals.html
    type: Reference
  description: Signals API for hooking into Celery lifecycle events including task, worker, beat, and consumer signals to
    build extensions and observability.
- aid: celery:celery-monitoring-api
  name: Celery Monitoring and Events API
  tags:
  - Monitoring
  - Events
  - Observability
  humanURL: https://docs.celeryq.dev/en/stable/userguide/monitoring.html
  properties:
  - url: https://docs.celeryq.dev/en/stable/userguide/monitoring.html
    type: Documentation
  - url: https://docs.celeryq.dev/en/stable/reference/celery.events.html
    type: Reference
  description: Event streaming and monitoring API for inspecting workers, tasks, and queues. Supports the curses-based celery
    events monitor and third-party tools such as Flower.
common:
- type: Website
  url: https://docs.celeryq.dev/
- type: Documentation
  url: https://docs.celeryq.dev/en/stable/
- type: Reference
  url: https://docs.celeryq.dev/en/stable/reference/index.html
- type: GettingStarted
  url: https://docs.celeryq.dev/en/stable/getting-started/
- type: GitHub
  url: https://github.com/celery/celery
- type: PyPI
  url: https://pypi.org/project/celery/
- type: ChangeLog
  url: https://docs.celeryq.dev/en/stable/changelog.html
- type: Community
  url: https://github.com/celery/celery/discussions
- type: Issues
  url: https://github.com/celery/celery/issues
- type: Contributing
  url: https://docs.celeryq.dev/en/stable/contributing.html
- type: License
  url: https://github.com/celery/celery/blob/main/LICENSE
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com