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space of a specific :class:`.Template` object.
.. versionadded:: 0.6
:class:`.Cache` by itself is mostly a
container for a :class:`.CacheImpl` object, which implements
a fixed API to provide caching services; specific subclasses exist to
implement different
caching strategies. Mako includes a backend that works with
the Beaker caching system. Beaker itself then supports
a number of backends (i.e. file, memory, memcached, etc.)
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of a :class:`.Template`, and programmatic access to this
cache is typically via the :attr:`.Template.cache` attribute.
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r c �` � | j j ||fi | j |d� �� y)��Place a value in the cache.
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�
�c�5�A�D�$6�$6�r�4�$@�Ar c �\ � | j j |fi | j |d� ��S )aF Retrieve a value from the cache.
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backend is configured using these arguments upon first request.
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values will use that same backend.
N)r �getr* �r r$ r& s r r2 z Cache.getr s+ � � �t�y�y�}�}�S�A�D�$6�$6�r�4�$@�A�Ar c �^ � | j j |fi | j |d� �� y)aF Invalidate a value in the cache.
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backend is configured using these arguments upon first request.
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values will use that same backend.
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invalidater* r3 s r r5 zCache.invalidate~ s* � � �� � � � �S�A�D�$6�$6�r�4�$@�Ar c �* � | j dd�� y)zWInvalidate the cached content of the "body" method for this
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��� �d�*� �d�8J��Kr c �* � | j ||�� y)aN Invalidate a nested ``<%def>`` within this template.
Caching of nested defs is a blunt tool as there is no
management of scope -- nested defs that use cache tags
need to have names unique of all other nested defs in the
template, else their content will be overwritten by
each other.
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B�B�L� 0�r r c �4 � e Zd ZdZd� ZdZ d� Zd� Zd� Zd� Z y) � CacheImplz:Provide a cache implementation for use by :class:`.Cache`.c � � || _ y r )�cache)r rQ s r r zCacheImpl.__init__� s � ���
r Fc � � t � �)a7 Retrieve a value from the cache, using the given creation function
to generate a new value.
This function *must* return a value, either from
the cache, or via the given creation function.
If the creation function is called, the newly
created value should be populated into the cache
under the given key before being returned.
:param key: the value's key.
:param creation_function: function that when called generates
a new value.
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��NotImplementedErrorr# s r r' zCacheImpl.get_or_create� s
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CacheImpl.set� s
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CacheImpl.get� �
� � "�#�#r c � � t � �)z�Invalidate a value in the cache.
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