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django-q2/docs/install.rst
2015-07-03 14:42:30 +02:00

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Installation
============
- Install the latest version with pip::
$ pip install django-q
- Add :mod:`django_q` to your :const:`INSTALLED_APPS` in your projects :file:`settings.py`::
INSTALLED_APPS = (
# other apps
'django_q',
)
- Run Django migrations to create the database tables::
$ python manage.py migrate
- Make sure you have a `Redis <http://redis.io/>`__ server running
somewhere
Configuration
-------------
Configuration is handled via the :const:`Q_ClUSTER` dictionary in your :file:`settings.py`
.. code:: python
# settings.py example
Q_CLUSTER = {
'name': 'myproject',
'workers': 8,
'recycle': 500,
'timeout': 60,
'compress': True,
'save_limit': 250,
'label': 'Django Q',
'redis': {
'host': '127.0.0.1',
'port': 6379,
'db': 0, }
}
name
~~~~
Used to differentiate between projects using the same Redis server. Defaults to ``'default'``.
This can be useful if you have several projects using the same Redis server.
.. note::
Tasks are encrypted. When a worker encounters a task it can not decrypt, it will be discarded
workers
~~~~~~~
The number of workers to use in the cluster. Defaults to CPU count of the current host, but can be set to a custom number.
recycle
~~~~~~~
The number of tasks a worker will process before respawning. Useful to release resources on a regular basis. Defaults to ``500``.
timeout
~~~~~~~
The number of seconds a worker is allowed to spend on a task before it's terminated. Defaults to ``None``, meaning it will never time out.
Set this to something that makes sense for your use
compress
~~~~~~~~
Compress task packages to Redis. Useful for large payloads, but can add overhead when used with many small packages.
Defaults to ``False``
save_limit
~~~~~~~~~~
Limits the amount of successful tasks saved to Django.
Set to ``0`` for unlimited. Set to ``-1`` for no success storage at all.
Failures are always saved. Defaults to ``250``
label
~~~~~
The label used for the Django Admin page. Defaults to ``'Django Q'``
redis
~~~~~
Connection settings for Redis. Defaults::
redis: {
'host': 'localhost',
'port': 6379,
'db': 0,
'password': None,
'socket_timeout': None,
'charset': 'utf-8',
'errors': 'strict',
'unix_socket_path': None
}
For more information on these settings please refer to the `Redis-py <https://github.com/andymccurdy/redis-py>`__ documentation
.. note::
Django Q uses your :const:`SECRET_KEY` to encrypt task packages and prevent task crossover. So make sure you have it set up in your Django settings.