node.js http server how to get connections count

Question

I'm using node as a http server with the following code:

http.createServer(function(req, res) {}).listen(8181);

I'm looking for a simple way to monitor a node js http server from within the same process. For me it would be enough to have a own function which just outputs the current resource usage and connection count as json. For now I don't need deep measuring or real time performance monitoring.

What are the key performance indicators for a node http server and is it possible to get them from node? If yes how? What you think of the folling kpi's:

1. Connection Count
2. CPU Usage
3. Ram Usage

Just need to know which variables/functions I need to get the data?

Thx I really appreciate your help

Answer 1

You can get the amount of connection using a built in function of NodeJS. Check getConnections. Bellow an example how to use it:

var server = http.createServer(app);    

server.getConnections(function(error, count) {

    console.log(count);

});

I hope this is what you were looking for :)