带dataProvider的Yii2 memcache

更新数据库时,使用dataProvider构造和更新我的键/值的正确方法是什么?首先,我从数据库中查找所有新闻。我应该如何添加或更新密钥/值对的值?我一直都是这样,但从来没有用疑问来抓住障碍。红色有很多材料,但没有找到正确的方法。

$mem = new \Memcached();
$mem->addServer("localhost", 11211);
$result = $mem->get('categoriesProvider');

if(!$result){
    $whereString = " active = 1 ";
    $categoriesProvider = new ActiveDataProvider([
         'query' => News::find()->where($whereString),
         'pagination' => [
         'pageSize' => 6,
         'route' => Yii::$app->getRequest()->getQueryParam('first_step'),
                ],
         ]);
 $mem->set("categoriesProvider", $categoriesProvider);
 }
 $result = $mem->get("categoriesProvider");

以下是我的观点:

echo ListView::widget([
     'dataProvider' => $result,
     'itemView' => '_blogCategories',
     'layout' => '{items}<ulclass="pagination theme-colored">{pager}</ul>',
     'pager' => [
     'maxButtonCount' => 3,
     'options' => ['class' => 'pagination flRight'],
      ],

]);