| Package | Description | 
|---|---|
| org.springframework.cache.concurrent | Implementation package for  java.util.concurrentbased caches. | 
| org.springframework.cache.support | Support classes for the org.springframework.cache package. | 
| Class and Description | 
|---|
| AbstractValueAdaptingCache Common base class for  Cacheimplementations that need to adaptnullvalues (and potentially other such special values) before
 passing them on to the underlying store. | 
| Class and Description | 
|---|
| AbstractCacheManager Abstract base class implementing the common  CacheManagermethods. |