protected function configureRedis()
    {
        $config = [
            'REDIS_HOST'     => null,
            'REDIS_DATABASE' => null,
            'REDIS_PORT'     => null,
        ];

        $config['REDIS_HOST'] = $this->ask('What is the host of your redis server?');
        $config['REDIS_DATABASE'] = $this->ask('What is the name of the database that Cachet should use?');
        $config['REDIS_PORT'] = $this->ask('What port should Cachet use?', 6379);

        foreach ($config as $setting => $value) {
            $this->writeEnv($setting, $value);
        }
    }