I/O

Understanding the Input/Output (I/O) model of your application can mean the difference between an application that deals with the load it is subjected to, and one that crumples in the face of real-world uses cases. Perhaps while your application is small and does not serve high loads, it may matter far less. But as your application’s traffic load increases, working with the wrong I/O model can get you into a world of hurt.

Node.js shines in real-time web apps that employ push technology over WebSocket. Node’s real-time, two-way connections—where the client and server can each initiate communication—enable the freer exchange of data.