protected function commandStats(array $data, ConnectionInterface $conn)
    {
        try {
            $slave = $this->slaves->getByConnection($conn);
            $slave->setUsedMemory($data['memory_usage']);
            if ($this->output->isVeryVerbose()) {
                $this->output->writeln(
                    sprintf(
                        'Current memory usage for worker %d: %.2f MB',
                        $slave->getPort(),
                        $data['memory_usage']
                    )
                );
            }
        } catch (\Exception $e) {
            // silent
        }
    }