| Package | Description | 
|---|---|
| com.google.common.cache | This package contains caching utilities. | 
| Class and Description | 
|---|
| AbstractCache This class provides a skeletal implementation of the  Cacheinterface to minimize the
 effort required to implement this interface. | 
| AbstractCache.StatsCounter Accumulates statistics during the operation of a  Cachefor presentation byCache.stats(). | 
| Cache A semi-persistent mapping from keys to values. | 
| CacheBuilder A builder of  LoadingCacheandCacheinstances having any combination of the
 following features:
 
 automatic loading of entries into the cache
 least-recently-used eviction when a maximum size is exceeded
 time-based expiration of entries, measured since last access or last write
 keys automatically wrapped in weak references
 values automatically wrapped in weak or
     soft references
 notification of evicted (or otherwise removed) entries
 accumulation of cache access statistics | 
| CacheBuilderSpec A specification of a  CacheBuilderconfiguration. | 
| CacheLoader Computes or retrieves values, based on a key, for use in populating a  LoadingCache. | 
| CacheStats Statistics about the performance of a  Cache. | 
| ForwardingCache A cache which forwards all its method calls to another cache. | 
| ForwardingLoadingCache A cache which forwards all its method calls to another cache. | 
| LoadingCache A semi-persistent mapping from keys to values. | 
| RemovalCause The reason why a cached entry was removed. | 
| RemovalListener An object that can receive a notification when an entry is removed from a cache. | 
| RemovalNotification A notification of the removal of a single entry. | 
| Weigher Calculates the weights of cache entries. | 
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