made cachizer easier to read; refactored read & write
made cachizer easier to read; refactored read & write

hotrannam/letterpwn,hotrannam/letterpwn,hotrannam/letterpwn,neilk/letterpwn,neilk/letterpwn,neilk/letterpwn,hotrannam/letterpwn,neilk/letterpwn