org.geowebcache.cache.file.FileCache?

This class stores cached images straight to disk. If used with FilePathKey?, the default cache key for this backend, it mimics the behavior of Metacarta's TileCache?.

	String filename = 
	layerPrefix
	+ File.separator + zeroPadder(z - 1, 2)
	+ File.separator + zeroPadder( x / 1000000, 3) 
	+ File.separator + zeroPadder((x / 1000 )% 1000, 3)
	+ File.separator + zeroPadder( x % 1000, 3) 
	+ File.separator + zeroPadder( y / 1000000, 3)
	+ File.separator + zeroPadder((y / 1000)%1000, 3)
	+ File.separator + zeroPadder( y % 1000, 3) 
	+ format;

If your server has sufficient amounts of memory the operating system will cache frequently used disk blocks in memory, therefore this backend can achieve significantly better performance than the specifications of the disk from which the tiles are read.