Redis

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$redis['master'] = array(
    'host' => '172.19.104.157',
    'port' => 6379, //Ĭ��Ϊ6379
    //'database' => 16, //���ݿ�ID����ѡ
);

• Ĭ��ȡmaster����Ϊredis���ã�$this->redis->get����ܻ��ȡ$this->config['redis']['master']��Ϊ����
• ʹ��$this->redis('master2')->get ʵ�ֶ�ʵ�����ʣ���ܻ��ȡ$this->config['redis']['master2']��Ϊ����