Node.js has been attracting the concentration of developers the world over. Node. JS Written in JavaScript, this open-source cross-platform environment makes Node.js a stand-out choice for real-time applications. Airbnb, LinkedIn, Walmart, Uber, and even NASA (!) have used Node.js in production.

Node.js is an application runtime setting that allows you to write server-side applications in JavaScript. Thanks to its exceptional I/O model, it excels at the sort of scalable and real-time situations we are increasingly demanding of our servers. It’s also lightweight, capable, and its capacity to use JavaScript on both frontend and backend opens new avenues for development. It comes as no surprise that so various big companies have leveraged Node.js in production.

NPM: The Node Package Manager
When discussing Node.js, one thing that absolutely should not be not there is built-in sustain for put together administration using the NPM tool that comes by evasion with every Node.js installation. The idea of NPM modules is fairly similar to that of Ruby Gems: a set of openly available, reusable workings, available from side to side easy installation via an online repository, with version and dependency management.

• Some of the most useful NPM modules today are:
1. Express
2. Hapi
3. Connect
4. and sockjs
5. pug
6. mongodb and mongojs
7. redis
8. lodash
9. forever
10. bluebird
11. moment

Examples of Where Node.js Should Be Used
Node.js is simply working as a server-side proxy where it can handle a huge amount of real-time connections in a non-blocking way. It’s particularly useful for proxying different services with different response times, or collecting data from several source points. An example: consider a server-side application communicates with third-party resources, pull in data from different sources, or storing assets like images and videos to third-party cloud services.

We’ve discuss Node.js from theory to exercise, start with its goals and ambitions, and finish with its sweet spots and pitfalls. When people run into effort with Node, it approximately always boils down to the fact that blocking operation are the root of all evil—99% of Node misuses come as a direct result.

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