{
    "type": "object",
    "additionalProperties": false,
    "properties": {
        "maxKeys": {
            "type": "integer"
        },
        "checkperiod": {
            "type": "integer"
        }
    },
    "patternProperties": {
        "^[0-9]{3}$": {
            "type": "object",
            "properties": {
                "ttl": {
                    "type": "integer"
                }
            },
            "required": [
                "ttl"
            ]
        }
    },
    "minProperties": 1
}