Catching an uncaughtException in express.js based server

my_server.js

var express = require('express');
process.on('uncaughtException', function(err) { 
    console.log( " UNCAUGHT EXCEPTION " );
    console.log( "[Inside 'uncaughtException' event] " + err.stack || err.message );
});

anHTTPServer = express.createServer(function (req,res){
  if (Math.random() > 0.9) throw new Error('fail!');
    res.send("Hello World : Express!!");
});

anHTTPServer.listen(3000);

var express = require('express');

anHTTPServer = express.createServer(function (req,res){
if (Math.random() > 0.9) throw new Error('fail!');
res.send("Hello World : Express!!");
});

anHTTPServer.listen(3000);

if (Math.random() > 0.5) throw new Error('fail!');

process.on('uncaughtException', function (err) {
console.log( "UNCAUGHT EXCEPTION " );
console.log( "[Inside 'uncaughtException' event] " + err.stack || err.message );
});

// To have control of both kinda errors, ones inside express.js and othewise.
// For catching express errors, use anHTTPServer.error(...). IMPORTANT : If you don't put this, errors generated inside express will still be not caught using process.on('uncaughtException', function (err) {...}
// For anything else just use process.on('uncaughtException', function (err) {...}
var express = require('express');

anHTTPServer = express.createServer(function (req,res){
if (Math.random() > 0.9) throw new Error('Failed, 90:10');
res.send("Hello World : Express!!");
});

anHTTPServer.listen(3000);

anHTTPServer.error(function(err, req, res, next){
console.log( "[anHTTPServer.error(...) called !] " +err.stack || err.message);
});

if (Math.random() > 0.5) throw new Error('Failed, 50:50');

process.on('uncaughtException', function (err) {
console.log( "UNCAUGHT EXCEPTION " );
console.log( "[Inside 'uncaughtException' event] " + err.stack || err.message );
});

You have a problem with this approach. Basically, is a exception occurs and you catch this on your proccess.on you will perform the callback to any other requests.