Constructor Detail

• DiskStorageCache

  DiskStorageCache(DiskStorage diskStorage, EntryEvictionComparatorSupplier entryEvictionComparatorSupplier, DiskStorageCache.Params params, CacheEventListener cacheEventListener, CacheErrorLogger cacheErrorLogger, DiskTrimmableRegistry diskTrimmableRegistry, Executor executorForBackgrountInit, boolean indexPopulateAtStartupEnabled)

Method Detail

• getDumpInfo

   DiskStorage.DiskDumpInfo getDumpInfo()

• isEnabled

   boolean isEnabled()

  Tells if this cache is enabled. It's important for some caches that can be disabled withoutfurther notice (like in removable/unmountable storage). Anyway a disabled cache should justignore calls, not fail.

• isIndexReady

   boolean isIndexReady()

  Tells if memory index is completed in initialization. Only call it when you need to know ifmemory index is completed in cold start.

• getResource

  @Nullable() BinaryResource getResource(CacheKey key)

  Retrieves the file corresponding to the mKey, if it is in the cache. Also touches the item,thus changing its LRU timestamp. If the file is not present in the file cache, returns null.

  This should NOT be called on the UI thread.

  Parameters:

  key - the mKey to check

• probe

   boolean probe(CacheKey key)

  Probes whether the object corresponding to the mKey is in the cache. Note that the act ofprobing touches the item (if present in cache), thus changing its LRU timestamp.

  This will be faster than retrieving the object, but it still has file system accesses andshould NOT be called on the UI thread.

  Parameters:

  key - the mKey to check

• insert

   BinaryResource insert(CacheKey key, WriterCallback callback)

  Inserts resource into file with key

  Parameters:

  key - cache key

• remove

   void remove(CacheKey key)

  Removes a resource by key from cache.

  Parameters:

  key - cache key

• clearOldEntries

   long clearOldEntries(long cacheExpirationMs)

  Deletes old cache files.

  Parameters:

  cacheExpirationMs - files older than this will be deleted.

• getSize

   long getSize()

• getCount

   long getCount()

• clearAll

   void clearAll()

• hasKeySync

   boolean hasKeySync(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.

• hasKey

   boolean hasKey(CacheKey key)

• trimToMinimum

   void trimToMinimum()

• trimToNothing

   void trimToNothing()