Class UnboundedLocalCache.UnboundedPolicy<K,V>

java.lang.Object
com.github.benmanes.caffeine.cache.UnboundedLocalCache.UnboundedPolicy<K,V>
All Implemented Interfaces:
Policy<K,V>
Enclosing class:
UnboundedLocalCache<K,V>
static final class UnboundedLocalCache.UnboundedPolicy<K,V> extends Object implements Policy<K,V>
An eviction policy that supports no boundings.

  • Field Details

  • Constructor Details

  • Method Details

    • isRecordingStats

      public boolean isRecordingStats()
      Description copied from interface: Policy
      Returns whether the cache statistics are being accumulated.
      Specified by:
      isRecordingStats in interface Policy<K,V>
      Returns:
      if cache statistics are being recorded

    • getIfPresentQuietly

      public V getIfPresentQuietly(Object key)
      Description copied from interface: Policy
      Returns the value associated with the key in this cache, or null if there is no cached value for the key. Unlike Cache.getIfPresent(Object), this method does not produce any side effects such as updating statistics, the eviction policy, reseting the expiration time, or triggering a refresh.
      Specified by:
      getIfPresentQuietly in interface Policy<K,V>
      Parameters:
      key - the key whose associated value is to be returned
      Returns:
      the value to which the specified key is mapped, or null if this cache contains no mapping for the key

    • eviction

      public Optional<Policy.Eviction<K,V>> eviction()
      Description copied from interface: Policy
      Returns access to perform operations based on the maximum size or maximum weight eviction policy. If the cache was not constructed with a size-based bound or the implementation does not support these operations, an empty Optional is returned.
      Specified by:
      eviction in interface Policy<K,V>
      Returns:
      access to low-level operations for this cache if an eviction policy is used

    • expireAfterAccess

      public Optional<Policy.Expiration<K,V>> expireAfterAccess()
      Description copied from interface: Policy
      Returns access to perform operations based on the time-to-idle expiration policy. This policy determines that an entry should be automatically removed from the cache once a fixed duration has elapsed after the entry's creation, the most recent replacement of its value, or its last access. Access time is reset by all cache read and write operations (including Cache.asMap().get(Object) and Cache.asMap().put(K, V)), but not by operations on the collection-views of Cache.asMap().

      If the cache was not constructed with access-based expiration or the implementation does not support these operations, an empty Optional is returned.

      Specified by:
      expireAfterAccess in interface Policy<K,V>
      Returns:
      access to low-level operations for this cache if a time-to-idle expiration policy is used

    • expireAfterWrite

      public Optional<Policy.Expiration<K,V>> expireAfterWrite()
      Description copied from interface: Policy
      Returns access to perform operations based on the time-to-live expiration policy. This policy determines that an entry should be automatically removed from the cache once a fixed duration has elapsed after the entry's creation, or the most recent replacement of its value.

      If the cache was not constructed with write-based expiration or the implementation does not support these operations, an empty Optional is returned.

      Specified by:
      expireAfterWrite in interface Policy<K,V>
      Returns:
      access to low-level operations for this cache if a time-to-live expiration policy is used

    • refreshAfterWrite

      public Optional<Policy.Expiration<K,V>> refreshAfterWrite()
      Description copied from interface: Policy
      Returns access to perform operations based on the time-to-live refresh policy. This policy determines that an entry should be automatically reloaded once a fixed duration has elapsed after the entry's creation, or the most recent replacement of its value.

      If the cache was not constructed with write-based refresh or the implementation does not support these operations, an empty Optional is returned.

      Specified by:
      refreshAfterWrite in interface Policy<K,V>
      Returns:
      access to low-level operations for this cache if a time-to-live refresh policy is used