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-rw-r--r--docs/releases/1.8.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/releases/1.8.txt b/docs/releases/1.8.txt
index d3232d8235..fec2e2b4bc 100644
--- a/docs/releases/1.8.txt
+++ b/docs/releases/1.8.txt
@@ -729,6 +729,10 @@ Miscellaneous
.. _universal newlines: http://www.python.org/dev/peps/pep-0278
+* The Memcached cache backends ``MemcachedCache`` and ``PyLibMCCache`` will
+ delete a key if ``set()`` fails. This is necessary to ensure the ``cache_db``
+ session store always fetches the most current session data.
+
.. _deprecated-features-1.8:
Features deprecated in 1.8