public function getMetaStorageValues() {
$values = array();
foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator(sys_get_temp_dir() . '/http_cache/md', \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
$values[] = file_get_contents($file);
}
return $values;
}