private function deleteGlob($pattern)
{
$keys = $this->client->keys($pattern);
$options = $this->client->getOptions();
if (isset($options->prefix)) {
$length = strlen($options->prefix->getPrefix());
$keys = array_map(function ($key) use($length) {
return substr($key, $length);
}, $keys);
}
if (count($keys) === 0) {
return;
}
$this->client->del($keys);
}