Ticket #8269: only-save-sessions-when-modified.patch

django/contrib/sessions/backends/base.py

@@ -33 +33 @@
         return self._session[key]
 
     def __setitem__(self, key, value):
-        self._session[key] = value
-        self.modified = True
+        if not key in self._session or self._session[key] != value:
+            self._session[key] = value
+            self.modified = True
 
     def __delitem__(self, key):
         del self._session[key]