YII 框架 第九天（4）数据缓存

说是很重要的,经常使用数据缓存,而不是其他的片段和页面缓存,额好像我不太喜欢这种缓存额

            function getGoodsInfo($id)
            {
                $info = Yii::app()->cache->get('goods_info'.$id);//为什么要加id呢,因为要生成多个缓存页面 goods/detail&id=1 goods/detail&id=2 
                                                                 //如果没有加id,那么 goods/detail&id=3 会和id=1一样,是同一个缓存页面
                if(!empty($info))
                {
                    return $info;
                }
                $info = Goods::model()->findByPk($id);
                Yii::app()->cache->set('goods_info'.$id,$info,10);
                return $info;
            }

不带缓存情况下的Detail

        public function actionDetail($id)
        {
            $goods_model = Goods::model();
            $goods_info = $goods_model->findByPk($id);
            $this->render('detail',array('goods_info'=>$goods_info));
        }

带缓存的Detail

        public function actionDetail($id)
        {
            $goods_model = Goods::model();
            $goods_info = $goods_model->getGoodsInfo($id);
            $this->render('detail',array('goods_info'=>$goods_info));
        }