Merge branch 'biz' of https://github.com/dianping/cat into biz
Merge branch 'biz' of ssh://code.dianpingoa.com/arch/cat into biz
add more unit tests
Merge branch 'biz' of https://github.com/dianping/cat into biz
merge and more unit tests
refine code
Merge pull request #205 from ainilife/biz

more unit tests