*
* @param string $key Cache key
* @param integer $ttl How long to keep the tombstone [seconds]
- * @param holdoff $ttl HOLDOFF_* constant controlling how long to ignore sets for this key
+ * @param integer $holdoff HOLDOFF_* constant controlling how long to ignore sets for this key
* @return bool Success
*/
protected function relayPurge( $key, $ttl, $holdoff ) {