Can't add value to cache?

Question

Yii

I have this code in Yii2:

$success = Yii::$app->cache->set($cacheKey, $data, DAY, $this->dependency);

where,

$cacheKey = "Images::/2ws/dsasdsadas/",
$data = {simplehtmldom_1_5\simple_html_dom_node}[23]
DAY = 86400
$this->dependency = {yii\caching\DbDependency}[6]

The situation is this, does not add value to the cache, $success returns false.
What could be the problem, how to diagnose and cure it?

Answer 1

The problem was in access to folders and files 775 was replaced by 777.