@Override
    public int hashCode() {
        int result = route != null ? route.hashCode() : 0;
        result = 31 * result + statusCode;
        return result;
    }
counter for per route/status code counting
@author Mikey Cohen
Date: 2/3/12
Time: 3:04 PM
zuul-core/src/main/java/com/netflix/zuul/stats/RouteStatusCodeMonitor.java