f887361f_ing_Configuring___Eclipsepedia__Cache_Annotation_Attributes_Description
[Attribute] refreshOnlyIfNewer [Default] false [Required?] Optional [Description] 
Set to a boolean value of true to force all queries that go to the database to refresh the cache only if the data received from the database by a query is newer than the data in the cache (as determined by the optimistic locking field). Note: This option only applies if one of the other refreshing options, such as alwaysRefresh, is already enabled. Note: A version field is necessary to apply this feature.
EclipseLink/UserGuide/JPA/Basic JPA Development/Caching/Configuring - Eclipsepedia