This site says:
You'll need make-bcache from the bcache-tools repository. Both the cache device and backing device must be formatted before use.
make-bcache -B /dev/sdb make-bcache -C /dev/sdcWiki and git repositories are at: http://bcache.evilpiepirate.org
http://evilpiepirate.org/git/linux-bcache.git
http://evilpiepirate.org/git/bcache-tools.git

giton your system. Read the git book. Have specific usage questions? Useman git. – htor Jan 27 at 17:34