See: Description
| Interface | Description | 
|---|---|
| AsyncCacheLoader<K,V> | Computes or retrieves values asynchronously, based on a key, for use in populating a
  AsyncLoadingCache. | 
| AsyncLoadingCache<K,V> | A semi-persistent mapping from keys to values. | 
| Cache<K,V> | A semi-persistent mapping from keys to values. | 
| CacheLoader<K,V> | Computes or retrieves values, based on a key, for use in populating a  LoadingCacheorAsyncLoadingCache. | 
| CacheWriter<K,V> | Communicates the write or deletion of a value, based on a key, to an external resource. | 
| Expiry<K,V> | Calculates when cache entries expire. | 
| LoadingCache<K,V> | A semi-persistent mapping from keys to values. | 
| Policy<K,V> | An access point for inspecting and performing low-level operations based on the cache's runtime
 characteristics. | 
| Policy.Eviction<K,V> | The low-level operations for a cache with a size-based eviction policy. | 
| Policy.Expiration<K,V> | The low-level operations for a cache with a fixed expiration policy. | 
| Policy.VarExpiration<K,V> | The low-level operations for a cache with a variable expiration policy. | 
| RemovalListener<K,V> | An object that can receive a notification when an entry is removed from a cache. | 
| Ticker | A time source that returns a time value representing the number of nanoseconds elapsed since some
 fixed but arbitrary point in time. | 
| Weigher<K,V> | Calculates the weights of cache entries. | 
| Class | Description | 
|---|---|
| Caffeine<K,V> | A builder of  AsyncLoadingCache,LoadingCache, andCacheinstances
 having a combination of the following features:
 
   automatic loading of entries into the cache, optionally asynchronously
   size-based eviction when a maximum is exceeded based on frequency and recency
   time-based expiration of entries, measured since last access or last write
   asynchronously refresh when the first stale request for an entry occurs
   keys automatically wrapped in weak references
   values automatically wrapped in weak or
       soft references
   writes propagated to an external resource
   notification of evicted (or otherwise removed) entries
   accumulation of cache access statistics | 
| CaffeineSpec | A specification of a  Caffeinebuilder configuration. | 
| Enum | Description | 
|---|---|
| RemovalCause | The reason why a cached entry was removed. | 
 The core interface used to represent caches is Cache.
 A cache may be specialized as either a LoadingCache
 or AsyncLoadingCache.
 
 In-memory caches can be configured and created using
 Caffeine. The cache entries may be loaded by
 CacheLoader, weighed by
 Weigher, and on removal forwarded to
 RemovalListener. Statistics about cache performance
 are exposed using CacheStats.