ActiveDataProvider caching

I have a REST-controller like in Guide (http://www.yiiframework.com/doc-2.0/guide-rest-controllers.html).

How I may cache data (ActiveDataProvider) returned by prepareDataProvider method?

Some code:

public function actions()

{

	$actions = parent::actions();

	unset($actions['delete']);

	$actions['index']['prepareDataProvider'] = [$this, 'prepareDataProvider'];


	return $actions;

}


public function prepareDataProvider()

{

	$query = Users::find()

		->active();


	return new ActiveDataProvider([

		'query' => $query,

		'pagination' => [

			'pageSize' => 50

		],

	]);

}

I would also like to know how to do it.

This is what I am using

in config[‘components’] (changing to redis pre deployment)

		'cache' => [

			'class' => 'yii\caching\FileCache',

		],

in search method

		$query = $this->buildSearch($params);// returns instance of yii\db\Query;

		$db = Yii::$app->db;

		$countQuery = clone $query;

    	        $pages = new Pagination(['totalCount' => $countQuery->count()]);

		$models = $db->cache(function($db) use (&$query, &$params, &$pages){

			return $query->offset(\yii\helpers\ArrayHelper::getValue($params, 'page', $pages->offset))

	           ->limit($pages->limit)

	            ->all();

		});


		return new ActiveDataProvider([

			'query'      => $query,

			'pagination' => $pages,

			'models'     => $models,

		]);

As you can see I’m not caching the pagination query yet, but could use the same approach