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A simple demo showing the power of Node's cluster module.
With just a few lines of code you can significantly increase the performance of your Node/Express applications!
server-basic.js contains a minimalist Node/Express server
server-cluster.js contains the same server forked using the Node cluster module.
Testing server performance
You can compare the performance of each server with Siege, an awesome HTTP load testing utility.
The below comparison was generated using the siege command siege -b -c 255 -t 15S http://localhost:3000
Setting up the repository/running performance tests yourself
Use npm install to grab the required node modules
Install the Siege command line tool by following the steps outlined in this blog post
Run the basic server via npm run basic
In another terminal window, test the server's performance via npm run siege or create a custom siege test of your choosing
Once the test is complete, shut down the basic server and run the cluster server via npm run cluster
Test the cluster server with the same test you ran on the basic server
Once the second test is complete, you can compare each servers' performance via the terminal log or view more detailed log results from Siege in /usr/local/var/siege.log
