6 posts tagged with "backend"

Integrating JSON Web Tokens (JWT) into an Express.js and React.js application is a common approach for handling user authentication and authorization. JWTs provide a secure way to transmit information between parties and can be used to verify the authenticity of the data. Below, I'll guide you through the process of implementing JWT-based authentication in an Express.js backend and a React.js frontend.

Express.js, a popular web framework for Node.js, provides a robust routing system that allows developers to define how the application responds to client requests. In this comprehensive guide, we'll delve into the intricacies of Express routing, exploring the various aspects, patterns, and best practices to help you master the art of routing in Express.

Uploading files is a common requirement in web applications, and Express provides functionality to handle file uploads seamlessly. In this comprehensive guide, we'll explore how to implement file uploads in an Express.js application, covering essential concepts, middleware, and best practices.

Node.js, with its event-driven architecture, is well-known for its efficient handling of asynchronous tasks. Streams are a crucial feature in Node.js that play a significant role in managing data flow, making it possible to process large datasets or perform real-time operations. In this comprehensive guide, we will explore streams in Node.js, covering their types, use cases, and best practices.

In Node.js, you can use the built-in zlib module to compress and decompress files using various compression algorithms. Here's a simple example demonstrating how to compress a file using gzip compression:

In Node.js, the EventEmitter class is a core module that facilitates the implementation of the Observer pattern. It allows objects to emit and listen for events. This mechanism is widely used in Node.js for handling asynchronous operations and building event-driven architectures. Below is an example demonstrating the use of EventEmitter: