public function dec($id, $value = 1) {
		if (! $this->connectionCheckStatus) {
			$this->addServer();
		}
		
		$id     = $this->prepareId($id);
		$result = $this->getClient()->decrement($id, $value);
		
		if ($result === false && $this->operationsExceptions) {
			throw new OperationFailed('Decrementing of the data in the cache failed, ID: "' . $id . '"');
		}
		
		return $result;
	}