Offline Mode
Some functions might not work
Nam Vo Website
I developed this website to
share my knowledge and satisfy my coding passion
0
Total Articles
0
Article Views
0
Photo Captured
Recent moments
Capturing the beauty of everyday life through my lens.
Sunset light reflecting on the sea
Cafe Haru
Bitexco
Train Street - Ha Noi
Ba Den Mountain - Tay Ninh
Ba Den Mountain in my hometown
Terraced fields - Ha Giang
Cloud Forest - Singapore
Reading room
Insightful articles, tutorials, and my coding journey.
LATEST BLOGS
From Heroku to Kamal: Taking Control of My Rails Deployment
I used to deploy my Rails application to Heroku. It was convenient: push the code, wait for the build, and let the platform handle the infrastructure. But eventually, I wanted more control over my server and a more cost-effective way to host my perso
2026-10-26 21:46:17 +0700
· 5 mins read
Software Engineer
Software Engineer
Ruby on Rails
Ruby on Rails
Include, Extend, Prepend in Rails: Understanding Ruby Modules
When I first started working with Rails, I saw include everywhere. Models included modules, controllers included concerns, and some classes used extend or prepend. At first, the differences seemed simple:include adds instance methods.extend adds clas
2026-10-14 20:29:07 +0700
· 6 mins read
Ruby on Rails
Ruby on Rails
Solving the "must appear in the GROUP BY clause" Error in Rails and PostgreSQL
This blog will give an example of how to resolve this common error when using group_by in Active Record1. Example problemFirst, take a look at this SQL problem. Imagine you're working on a booking application where users can have multiple sessions. Y
Software Engineer
Software Engineer
Ruby on Rails
Ruby on Rails
2024-07-10 23:00:10 +0700
·
3 mins read
Docker compose basics: Essential commands
Docker has revolutionized the way we develop, package, and deploy applications. It allows us to containerize our applications, providing a consistent and reproducible environment across different platforms. Docker Compose takes it a step further by e
Software Engineer
Software Engineer
Docker
Docker
2024-09-22 18:29:37 +0700
·
3 mins read
How to Manage and Renew SSL Certificates Using Docker Compose
Securing your website with SSL certificates is essential to protect data transmitted between the server and client. Managing and renewing SSL certificates can be a cumbersome task, but Docker simplifies this process. In this blog post, we will demons
Docker
Docker
Software Engineer
Software Engineer
2024-08-15 21:06:08 +0700
·
3 mins read
JavaScript Microtask and Macrotask Queue
JavaScript interviews often include questions about asynchronous programming, as it's a fundamental concept in modern web development. One common challenge is understanding the intricate dance between Promises, timers, and the event loop. The Ch
Frontend
Frontend
Interview
Interview
2024-07-10 12:03:29 +0700
·
3 mins read
Popular apps
Discover the ultimate collection of free tools, conveniently accessible in one place.
Image Tools
Transform your images effortlessly, all within your browser. No uploads, no tracking - just pure, private image editing.
Try it now!
Caro Chess
The classic strategic game with Minimax alpha-beta engine. Challenge yourself in Easy, Medium, or Hard mode.
Play it now!
Link Shortener
Now you can shorten your link with a custom path. Say goodbye to complex shortened link characters and enjoy the convenience.
All for free!
QR Code Generator
Simply input your link, and instantly create a QR Code that directly leads to your website, no redirects or tracking involved.
Custom sizes are supported for use in your design.
What is my IP Address?
Check your IP address and find your IP location including city, region, country and postal code
Check it now!