Constructor Detail

• BufferedDiskCache

  BufferedDiskCache(FileCache fileCache, PooledByteBufferFactory pooledByteBufferFactory, PooledByteStreams pooledByteStreams, Executor readExecutor, Executor writeExecutor, ImageCacheStatsTracker imageCacheStatsTracker)

Method Detail

• getSize

   final Long getSize()

• containsSync

   final Boolean containsSync(CacheKey key)

  Returns true if the key is in the in-memory key index.

  Not guaranteed to be correct. The cache may yet have this key even if this returns false. But if it returns true, it definitely has it.

  Avoids a disk read.

• contains

   final Task<Boolean> contains(CacheKey key)

  Performs a key-value look up in the disk cache. If no value is found in the staging area, then disk cache checks are scheduled on a background thread. Any error manifests itself as a cache miss, i.e. the returned Task resolves to false.

• diskCheckSync

   final Boolean diskCheckSync(CacheKey key)

  Performs disk cache check synchronously.

• get

   final Task<EncodedImage> get(CacheKey key, AtomicBoolean isCancelled)

  Performs key-value look up in disk cache. If value is not found in disk cache staging area then disk cache read is scheduled on background thread. Any error manifests itself as cache miss, i.e. the returned task resolves to null.

• probe

   final Task<Void> probe(CacheKey key)

  Performs key-value look up in disk cache. If value is not found in disk cache staging area then disk cache probing is scheduled on background thread.

• addKeyForAsyncProbing

   final Unit addKeyForAsyncProbing(CacheKey key)

• put

   final Unit put(CacheKey key, EncodedImage encodedImage)

  Associates encodedImage with given key in disk cache. Disk write is performed on background thread, so the caller of this method is not blocked

• remove

   final Task<Void> remove(CacheKey key)

  Removes the item from the disk cache and the staging area.

• clearAll

   final Task<Void> clearAll()

  Clears the disk cache and the staging area.