页面缓存

<?php
namespace app\controllers;
use yii\web\Controller;


class HelloController extends Controller {
    public function behaviors() {
        return[
            [
                'class'=>'yii\filters\PageCache', //页面缓存
                'duration'=>1000,//缓存时间
                'only'=>['index','test'], //缓存的页面
                'dependency'=>[     //缓存依赖
                    'class'=>'yii\caching\FileDependency',
                    'fileName'=>'hw.txt'
                ]
            ]
        ];
    }
    public function actionIndex()
    {
      echo '5';
//        return $this->render('index');
    }
    public function actionTest() {
        echo '4';
    }
}

其中 behaviors() 方法会优先于其它的function