/**
* Loads key from Redis to local cache.
*
* @param string $key
*/
protected function loadValueByKey($key)
{
if (!isset($this->cache[$key])) {
$result = $this->redis->get($key);
$result = unserialize($result);
if (is_array($result)) {
$this->cache[$key] = $result;
}
}
}
