optimize redis cache
optimize redis cache

thinkjs/thinkjs,snadn/thinkjs,75team/thinkjs,75team/thinkjs,maxzhang/thinkjs,akira-cn/thinkjs,akira-cn/thinkjs,Qihoo360/thinkjs,akira-cn/thinkjs,maxzhang/thinkjs,75team/thinkjs,maxzhang/thinkjs