{
    "appenders": [{
            "type": "file",
            "filename": "relative/path/to/log_file.log",
            "maxLogSize": 20480,
            "backups": 3,
            "category": "relative-logger"
        },
        {
            "type": "file",
            "absolute": true,
            "filename": "/absolute/path/to/log_file.log",
            "maxLogSize": 20480,
            "backups": 10,
            "category": "absolute-logger"
        }
    ]
}