logConfig.json

{
    "appenders": {
        "out": {
            "type": "console"
        },
        "client": {
            "type": "file",
            "filename": "./client.log",
            "maxLogSize": 104800,
            "numBackups": 100
        },
        "server": {
            "type": "file",
            "filename": "./server.log",
            "maxLogSize": 104800,
            "numBackups": 100
        }
    },
    "categories": {
        "default": {
            "appenders": [
                "out"
            ],
            "level": "all"
        },
        "server": {
            "appenders": [
                "out",
                "server"
            ],
            "level": "info"
        },
        "client": {
            "appenders": [
                "out",
                "client"
            ],
            "level": "info"
        }
    },
    "replaceConsole": true
}