django-cachalot/docs/quickstart.rst
2014-10-28 23:44:28 +01:00

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Quick start
-----------
Requirements
............
- Django 1.6 or 1.7
- Python 2.6, 2.7, 3.2, 3.3, or 3.4
- `django-redis <https://github.com/niwibe/django-redis>`_,
`memcached <https://docs.djangoproject.com/en/1.7/topics/cache/#memcached>`_
(or `locmem <https://docs.djangoproject.com/en/1.7/topics/cache/#local-memory-caching>`_,
but its not shared between processes, so dont use it with RQ or Celery)
- PostgreSQL, MySQL or SQLite
Usage
.....
#. ``pip install django-cachalot``
#. Add ``'cachalot',`` to your ``INSTALLED_APPS``
#. Be aware of :ref:`the few limits <limits>`
#. Enjoy!
Settings
........
==================== ============= ============================================
Setting Default value Description
==================== ============= ============================================
``CACHALOT_ENABLED`` ``True`` If set to ``False``, disables SQL caching
but keeps invalidating to avoid stale cache
``CACHALOT_CACHE`` ``'default'`` Alias of the cache from |CACHES|_ used by
django-cachalot
==================== ============= ============================================
.. |CACHES| replace:: ``CACHES``
.. _CACHES: https://docs.djangoproject.com/en/1.7/ref/settings/#std:setting-CACHES
These settings can be changed whenever you want.
You have to use ``cachalot_settings`` as a context manager, a decorator,
or simply by changing its attributes:
.. code:: python
from cachalot.settings import cachalot_settings
with cachalot_settings(CACHALOT_ENABLED=False):
# SQL queries are not cached in this block
@cachalot_settings(CACHALOT_CACHE='another_alias')
def your_function():
# Whats in this function uses another cache
# Globally disables SQL caching until you set it back to True
cachalot_settings.CACHALOT_ENABLED = False
In tests, you can use
`Djangos testing tools <https://docs.djangoproject.com/en/1.7/topics/testing/tools/#overriding-settings>`_
as well as ``cachalot_settings``. The only difference is that you cant use
``cachalot_settings`` to decorate a class.