Disclosed is a method for reducing number of writes in a write-back non-volatile cache memory. The method comprises: writing a plurality of data in the cache memory, wherein cache lines meta data for each of the plurality of data is marked as dirty; determining a set of data of the plurality of the data in the cache memory to be flushed to a hard disk, wherein the hard disk is operatively coupled to the cache memory; flushing the set of data of the plurality of data to the hard disk from the cache memory; and writing a clean-marker to the cache memory specifying which of the plurality of the data has been flushed to the disk.