Node.js NodeJS设计模式：简单http路由器

我正在开发一个nodeJS路由器，想知道在使用nodeJS路由http请求时是否有更快/更好的方法

我不想使用某种框架中的路由器，我想自己构建它

var servletRoutes = {
    "/grid/api/proxy" : statusServlet,
    "/grid/register" : registerServlet,
    "/grid/unregister" : unregisterServlet,
    "/selenium-server/driver" : rcRequestHandler
};

var parseIncoming = function(req, res, cb) {
    var srvUrl = url.parse(req.url.toString(), true);
    var servlet, route;
    if (servletRoutes[srvUrl.pathname]) {
        servlet = servletRoutes[srvUrl.pathname];
        return servlet.handleRequest(req, cb, res);
    } else {
        // slower lookup of routes
        for (route in servletRoutes) {
            if (route === srvUrl.pathname.substring(0, route.length)) {
                servlet = servletRoutes[route];
                return servlet.handleRequest(req, cb, res);
            }
        }
    }

    return cb("Invalid endpoint");
};

我们就是这样做的

var express = require( 'express' );
var app = express();
app.use( '/', app.router );
app.post('/grid/api/proxy', statusServlet,);
app.post('/grid/api/register', registerServlet,);
...
app.use( function ( request, response ) {
    response.send( 404 );
});
app.use( errorHandler );