Introduction to Node.js: Web development

Why learn Node Js?

• Allows rapid development due to the large number of reusable npm modules.

• You make fewer mistakes and become more productive by using a single language.

• Quick answer.

• You reduce communication through the team.

• Dependencies on other equipment are reduced (API teams for example).

• Possibility of reusing code in the frontend and backend.

What are the characteristics of NodeJS?

• Performs Non blocking I / O operations.

• It is mounted on the Google Chrome V8 Engine.

• Use an interpreted and expressive language (JavaScript).

• It is a solid and improved ECMAScript standard.

• It has a package handler including NPM.

What are the disadvantages of using Nodejs?

• Memory overload in long processes is worse in environments like the browser.

• Event loop makes error handling more difficult than synchronous process.

• There is no benefit to CPU tasks.

• Thinking in terms of scalability is required at an early stage to develop distributed systems.

• There is no ( typing although there are implementations like TypeScript that have it ).

JavaScript Everywhere: With Node.js, you can use JavaScript both on the client-side and the server-side, which means you can have a unified language for your entire web application stack.

Non-blocking and Event-Driven: Node.js is designed to be non-blocking and event-driven, which makes it highly efficient for handling concurrent connections. It uses an event loop to handle I/O operations asynchronously, enabling a single thread to handle many connections at the same time.

V8 Engine: Node.js is built on the V8 JavaScript engine from Google, the same engine that powers Google Chrome. This engine compiles JavaScript code to native machine code, making it extremely fast.

NPM (Node Package Manager): Node.js comes with a package manager called npm that is used to manage and share open-source JavaScript libraries and modules. You can easily install and manage third-party packages to extend the functionality of your web applications.

Modules: Node.js uses a module system that allows you to break your code into reusable modules. You can create your own modules and use modules provided by others through npm.

Web Servers: Node.js is often used to create web servers, either from scratch or by using web frameworks like Express.js. This enables you to build highly customizable and performant APIs and web applications.

Real-time Applications: Node.js is well-suited for building real-time applications such as chat applications, online gaming, and collaborative tools due to its ability to handle multiple concurrent connections efficiently.

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