I\'m writing a chat feature (like the Faceboook.com one) for a Google App Engine site. I need a way to keep track of what users have new messages. I\'m currently trying to use Memcache:
主料:五花肉400克豆腐泡160克香菇50克竹笋80克芥菜叶300克辅料:八角3个干辣椒4根大葱20克生姜15克调料:冰糖20克黄酒20克蚝油20克酱油15克盐2克鸡精2克荤菜炖什锦做法: