cache not expired be defaut

tiramisu/setting.py

@@ -85,7 +85,7 @@ validator
 warnings
     display warnings during validation
 """
-default_properties = ('cache', 'expire', 'validator', 'warnings')
+default_properties = ('cache', 'validator', 'warnings')
 
 """Config can be in two defaut mode:
 

tiramisu/value.py

@@ -118,9 +118,7 @@ class Values(object):
                                   config_bag=config_bag)
         # store value in cache
         if not is_cached and \
-            setting_properties and 'cache' in setting_properties and \
-                    config_bag.validate and config_bag.force_permissive is False and \
-                    config_bag.trusted_cached_properties is True:
+                setting_properties and 'cache' in setting_properties:
             if 'expire' in setting_properties:
                 if ntime is None:
                     ntime = int(time())