

However, you can also use Node.js to build your private blockchain. Node.js therefore shines in building fast, data-intensive, and real-time network applications, such as Uber and PayPal. You can see a great example of asynchronous programming in Node.js here. Basically, this means that a Node-based server does not wait for an API to return data. The main thing to remember is that Node.js is asynchronous and event-driven, which means it can support hundreds of simultaneous calls in the event loop. Node.js is an open-source runtime environment, which allows developers to create networked applications and web-servers in JavaScript. A simple guide on how to set up Node.js development environment on macOS.
