/**
*
* @param null|array $key
* @return bool
*/
public function clear($key = null)
{
$this->keyCache = array();
if (is_null($key)) {
$this->memcache->flush();
} else {
$keyString = $this->makeKeyString($key, true);
$this->memcache->inc($keyString);
$this->keyCache = array();
$this->makeKeyString($key);
}
$this->keyCache = array();
return true;
}
