EclipseLink/UserGuide/JPA/Basic JPA Development/Caching/Interceptors
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Cache Interceptors and External Caches
EclipseLink provides a very functional, performant and integrated cache. Usage of an external cache is not normally required in EclipseLink as it is in other JPA products. Although not required, EclipseLink does allow the integration of third party external caches through its CacheInterceptor annotation and API.
The Oracle TopLink Grid product provides an integration with EclipseLink to the Oracle Coherence distributed cache. A distributed cache allows a cache to be scaled to a large cluster of servers (see Oracle TopLink Grid).