This document describes the current stable version of Celery (5.2). For development docs, go here.

celery.backends.mongodb

MongoDB result store backend.

class celery.backends.mongodb.MongoBackend(app=None, **kwargs)

MongoDB result backend.

Raises:

celery.exceptions.ImproperlyConfigured – if module pymongo is not available.

as_uri(include_password=False)

Return the backend as an URI.

Parameters:

include_password (bool) – Password censored if disabled.

cleanup()

Delete expired meta-data.

property collection

Get the meta-data task collection.

property database

Get database from MongoDB connection.

performs authentication if necessary.

database_name = 'celery'

decode(data)

encode(data)

property expires_delta

property group_collection

Get the meta-data task collection.

groupmeta_collection = 'celery_groupmeta'

host = 'localhost'

max_pool_size = 10

mongo_host = None

options = None

password = None

port = 27017

supports_autoexpire = False

If true the backend must automatically expire results. The daily backend_cleanup periodic task won’t be triggered in this case.

taskmeta_collection = 'celery_taskmeta'

user = None