Cache.php

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<?php
namespace Magento\Framework\App;

class Cache implements CacheInterface
{
    protected $_frontendIdentifier = \Magento\Framework\App\Cache\Frontend\Pool::DEFAULT_FRONTEND_ID;

    protected $_frontendPool;

    protected $_frontend;

    public function __construct(\Magento\Framework\App\Cache\Frontend\Pool $frontendPool)
    {
        $this->_frontendPool = $frontendPool;
        $this->_frontend = $frontendPool->get($this->_frontendIdentifier);
    }

    public function getFrontend()
    {
        return $this->_frontend;
    }

    public function load($identifier)
    {
        return $this->_frontend->load($identifier);
    }

    public function save($data, $identifier, $tags = [], $lifeTime = null)
    {
        return $this->_frontend->save((string)$data, $identifier, $tags, $lifeTime);
    }

    public function remove($identifier)
    {
        return $this->_frontend->remove($identifier);
    }

    public function clean($tags = [])
    {
        if ($tags) {
            $result = $this->_frontend->clean(\Zend_Cache::CLEANING_MODE_MATCHING_ANY_TAG, (array)$tags);
        } else {
            $result = false;
            foreach ($this->_frontendPool as $cacheFrontend) {
                if ($cacheFrontend->clean()) {
                    $result = true;
                }
            }
        }
        return $result;
    }
}