HN.Nguyen

The HN.Nguyen Blog

Practical engineering insights on backend systems, frontend architecture, and real-world development.

All Articles Backend DevOps How-To's Linux Other Tutorials Web & Tech
How to Install Cursor IDE on Ubuntu

How to Install Cursor IDE on Ubuntu

Cursor is a modern AI-powered IDE designed for developers who want to boost productivity. Since Cursor is distributed as an AppImage , it can run on most Linux distributions without complex setup. In this guide, we’ll walk through installing and configuring Cursor IDE on Ubuntu.
Huu Nghia Nguyen Sep 4, 2025
Login to GitHub on macOS Using SSH Key

Login to GitHub on macOS Using SSH Key

This guide will show you how to create an SSH key on your computer and add it to GitHub. By doing this, you can establish a secure and convenient connection between your computer and GitHub, making it easier to clone, pull, and push repositories without having to enter your password every time.
Huu Nghia Nguyen Aug 29, 2025
Sessions vs JWTs: Understanding Authentication in Modern Web Applications

Sessions vs JWTs: Understanding Authentication in Modern Web Applications

In modern web development, most applications require users to log in to access personalized features. But have you ever wondered: Why can’t the server simply “remember” me after I’ve logged in once? This article explains the root cause of that problem — the stateless nature of HTTP — and introduces two popular approaches to solving it: Session-Cookie (Stateful) and JWT (Stateless) authentication.
Huu Nghia Nguyen Aug 1, 2025
How to run java jar application with systemd on Linux as service

How to run java jar application with systemd on Linux as service

On Linux systems, we can run the java jar by using the java -jar application.jar command. But to run the application on Linux startup and as a service, we need to use one of the options systemd.
Huu Nghia Nguyen Jun 4, 2025
Installing and Configuring PostgreSQL with Open Port Access on Ubuntu

Installing and Configuring PostgreSQL with Open Port Access on Ubuntu

Learn how to install and secure PostgreSQL database server on Ubuntu 22.04 for reliable, scalable data management.
Huu Nghia Nguyen Jun 3, 2025
Setup SSL for Nginx

Setup SSL for Nginx

This guide will help you set up SSL for your Nginx server on Ubuntu using Certbot. We will use a subdomain from GoDaddy, and the steps include installing Certbot, configuring Nginx, and generating an SSL certificate.
Huu Nghia Nguyen Jun 2, 2025
How To Install Nginx on Ubuntu 22.04

How To Install Nginx on Ubuntu 22.04

Nginx is one of the most popular web servers in the world and is responsible for hosting some of the largest and highest-traffic sites on the internet. It is a lightweight choice that can be used as either a web server or reverse proxy. In this guide, we’ll discuss how to install Nginx on your Ubuntu 22.04 server, adjust the firewall, manage the Nginx process, and set up server blocks for hosting more than one domain from a single server.
Huu Nghia Nguyen Jun 1, 2025
Initial Server Setup with Ubuntu

Initial Server Setup with Ubuntu

When you first create a new Ubuntu server, you should perform some important configuration steps as part of the initial setup. These steps will increase the security and usability of your server and will give you a solid foundation for subsequent actions.
Huu Nghia Nguyen May 31, 2025
The Fundamentals of Photo Composition

The Fundamentals of Photo Composition

Real-life examples through the lens of photographer Partho Protim Bhowmick.
Huu Nghia Nguyen May 30, 2025
How to Quickly Identify and Kill Applications Occupying a Port on Windows

How to Quickly Identify and Kill Applications Occupying a Port on Windows

When running a web or backend application on Windows, you may encounter the error “port already in use” (e.g., port 8080 already in use). This guide explains how to identify which application is using the port and terminate it quickly via command line, without external tools.
Huu Nghia Nguyen May 30, 2025
Fixing CRLF Issues in Git: Enforcing LF for Your Project

Fixing CRLF Issues in Git: Enforcing LF for Your Project

The error Expected linebreaks to be 'LF' but found 'CRLF' is a common headache for developers — especially those working on Windows — when dealing with Git and ESLint. This guide explains how to configure Git to use the standard LF line endings, helping you avoid unnecessary errors, keep your codebase clean and consistent, and make collaboration smoother.
Huu Nghia Nguyen May 30, 2025
Using Google Analytics to Grow Your Business

Using Google Analytics to Grow Your Business

A successful website is a definite must-have in the 21st century. But in order to maintain and improve your site’s performance, you need to understand how people are finding it, as well as where you have opportunities to be found. That’s where Google Analytics comes in. Google Analytics is a free tracking tool that gives you tremendous insight into your website traffic. To help you fully utilize the tool, we invited Brenda Newhouse, owner of Newhouse Studios Web Strategy , to guide you through “Using Google Analytics to Grow Your Business.” In this summary, you can get her tips on how to use three sections of the Google Analytics dashboard, so you can figure out where to invest your marketing budget.
Huu Nghia Nguyen May 30, 2025
HN.Nguyen

A personal space where I share what I build, what I learn, and what actually works in real projects.

Explore

Connect