Constructor Detail

• public LRUCache(int maxCacheSize)

  Creates an LRU cache with the supplied maximum size.

  Parameters:

  maxCacheSize - the maximum number of cached entries

Method Detail

• public void cleanUpNullReferences()

  Remove all entries holding SoftReferences to gc-evicted objects.

• public V get(K key)

  Returns the value associated with the supplied key.

  Parameters:

  key - the key to look up

  Returns:

  the cached value, or null if none is present

• public V getAndPut(K key, ValueProvider<? super K, ? extends V> valueProvider)

  Try to get the value from cache. If not found, create the value by MemoizeCache.ValueProvider and put it into the cache, at last return the value. The operation is completed atomically.

  Parameters:

  key - the key to look up

  valueProvider - provide the value if the associated value not found

  Returns:

  the cached or newly created value

• public V put(K key, V value)

  Associates the specified value with the specified key in this cache.

  Parameters:

  key - the key with which the value is to be associated

  value - the value to cache

  Returns:

  the previous value associated with key, or null