[memcache] safer validState maintainance
[memcache] safer validState maintainance

abduld/godropbox,horryq/godropbox,zj8487/godropbox,gc-locks/gosqlbuilder,wangtuanjie/godropbox,cch123/godropbox,danielrh/godropbox,danielrh/godropbox,dropbox/godropbox,dropbox/godropbox,zj8487/godropbox,icattlecoder/godropbox,sixolet/godropbox,horryq/godropbox,wfxiang08/godropbox,pattyshack/godropbox,wfxiang08/godropbox,abduld/godropbox,horryq/godropbox,abduld/godropbox,wfxiang08/godropbox,danielrh/godropbox,cch123/godropbox,dropbox/godropbox,sixolet/godropbox,icattlecoder/godropbox,pattyshack/godropbox,zj8487/godropbox,sixolet/godropbox,wangtuanjie/godropbox,wangtuanjie/godropbox,icattlecoder/godropbox,cch123/godropbox,pattyshack/godropbox