Tag.php

<?php

namespace Drupal\views\Plugin\views\cache;

use Drupal\Core\Cache\CacheBackendInterface;

/**
 * Simple caching of query results for Views displays.
 *
 * @ingroup views_cache_plugins
 *
 * @ViewsCache(
 *   id = "tag",
 *   title = @Translation("Tag based"),
 *   help = @Translation("Tag based caching of data. Caches will persist until any related cache tags are invalidated.")
 * )
 */
class Tag extends CachePluginBase {
    
    /**
     * {@inheritdoc}
     */
    public function summaryTitle() {
        return $this->t('Tag');
    }
    
    /**
     * {@inheritdoc}
     */
    protected function cacheExpire($type) {
        return FALSE;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getDefaultCacheMaxAge() {
        return CacheBackendInterface::CACHE_PERMANENT;
    }

}