f887361f_ing_Configuring___Eclipsepedia__Cache_Annotation_Attributes_Description
[Attribute] type [Default] CacheType.SOFT_WEAK [Required?] Optional [Description] 
Set this attribute to the type (org.eclipse.persistence.annotations.CacheType enumerated type) of the cache that you will be using: FULL WEAK SOFT SOFT_WEAK HARD_WEAK There are also types, CACHE and NONE but these are not recommended, and should not be used, to disable caching set isolation=ISOLATED instead.
EclipseLink/UserGuide/JPA/Basic JPA Development/Caching/Configuring - Eclipsepedia