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6 changes: 6 additions & 0 deletions book/http_cache.rst
Original file line number Diff line number Diff line change
Expand Up @@ -759,6 +759,12 @@ both worlds. In other words, by using both expiration and validation, you
can instruct the cache to serve the cached content, while checking back
at some interval (the expiration) to verify that the content is still valid.

.. tip::

You can also define HTTP caching headers for expiration and validation by using
annotations. See the
:doc:`FrameworkExtraBundle documentation </bundles/SensioFrameworkExtraBundle/annotations/cache>`.

.. index::
pair: Cache; Configuration

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