Method Detail

• isPersistent

  boolean isPersistent()

  Returns:

  true if persistent storage is supported for the cache when shutdown

• read

  int read(ByteBuffer dstBuffer,
         long offset)
           throws IOException

  Transfers data from IOEngine to the given byte buffer

  Parameters:

  dstBuffer - the given byte buffer into which bytes are to be written

  offset - The offset in the IO engine where the first byte to be read

  Returns:

  number of bytes read

  Throws:

  IOException

• write

  void write(ByteBuffer srcBuffer,
           long offset)
             throws IOException

  Transfers data from the given byte buffer to IOEngine

  Parameters:

  srcBuffer - the given byte buffer from which bytes are to be read

  offset - The offset in the IO engine where the first byte to be written

  Throws:

  IOException

• sync

  void sync()
            throws IOException

  Sync the data to IOEngine after writing

  Throws:

  IOException

• shutdown

  void shutdown()

  Shutdown the IOEngine