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Clarified timeout=0 in cache docs.

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Thomas Güttler 2015-02-11 16:00:12 +01:00 committed by Tim Graham
parent d7509c5246
commit e519ee1d35
1 changed files with 4 additions and 3 deletions
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7
docs/topics/cache.txt
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@ -359,11 +359,11 @@ Each cache backend can be given additional arguments to control caching
behavior. These arguments are provided as additional keys in the
:setting:`CACHES` setting. Valid arguments are as follows:
* :setting:`TIMEOUT <CACHES-TIMEOUT>`: The default timeout, in
seconds, to use for the cache. This argument defaults to ``300`` seconds (5 minutes).
You can set ``TIMEOUT`` to ``None`` so that, by default, cache keys never
expire.
expire. A value of ``0`` causes keys to immediately expire (effectively
"don't cache").
* :setting:`OPTIONS <CACHES-OPTIONS>`: Any options that should be
passed to the cache backend. The list of valid options will vary
@ -745,7 +745,8 @@ The basic interface is ``set(key, value, timeout)`` and ``get(key)``::
The ``timeout`` argument is optional and defaults to the ``timeout`` argument
of the appropriate backend in the :setting:`CACHES` setting (explained above).
It's the number of seconds the value should be stored in the cache. Passing in
``None`` for ``timeout`` will cache the value forever.
``None`` for ``timeout`` will cache the value forever. A ``timeout`` of ``0``
won't cache the value.
If the object doesn't exist in the cache, ``cache.get()`` returns ``None``::