tools/config.example.json

{
    "mysql": {
        "charset": "utf8mb4",
        "host": "localhost",
        "user": "root",
        "password": "root",
        "port": 3306,
        "database": "",
        "connectTimeout": 3600000,
        "acquireTimeout": 3600000,
        "timeout": 3600000
    }
}