{
        // for both slave and master
        "is_master": true,
        "listen_port": 8086,
        "heart_beat": 300,
        "max_connection_num": 200,
        
        // only for master
        "users_path": "./users.json",

        // only for slave
        "files_hash_path": "./files_hash.json",
        "master_addr": {
            "ip": "125.45.26.187",
            "port": 8086
        }
    }