appendJson("user-agent", entity.getUserAgent(), buf).append(',');
                appendJson("client-ip", entity.getClientIp(), buf).append(',');
                appendJson("access-type", entity.getAccessType(), buf).append(',');
                appendJson("query-time", entity.getQueryTime(), buf).append(',');

}

type jsonVar interface {
	// appendJSON appends the JSON representation of the receiver to b.
	appendJSON(b []byte) []byte
}

// Int is a 64-bit integer variable that satisfies the [Var] interface.
type Int struct {
	i atomic.Int64
}

func (v *Int) Value() int64 {
	return v.i.Load()
}

func (v *Int) String() string {
	return string(v.appendJSON(nil))
}