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Sams Teach Yourself Node.js in 24 Hours by George Ornbo

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Hour 3. What Node.js Is Used For

What You’ll Learn in This Hour:

• What I/O means

• The problem that Node.js is trying to solve

• What concurrency means

• Different approaches to concurrency

What Node.js Is Designed to Do

Now that you have a brief understanding of how to run a Node.js program and how to use npm to install modules, this hour covers what Node.js is designed for. The Node.js website provides a short description of Node.js:

Node.js is a platform built on Chrome’s JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.

For a general ...

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