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Nam Vo Website
I developed this website to
share my knowledge and satisfy my coding passion
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Total Articles
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Knowledge Shared
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Moments Captured
Recent moments
Capturing the beauty of everyday life through my lens.
Alishan - Taiwan
Tay Ninh Holy See
Fallen Sky
Dasara Waterfall - Bao Loc
Mail Box - Taiwan
Train Street - Ha Noi
Reading room
Insightful articles, tutorials, and my coding journey.
LATEST BLOGS
[Part 1] My Taiwan Trip - More Than I Expected
I had a 6-day trip to Taiwan and made many unforgettable memories there. Taiwan is more than just the modern city of Taipei. From the cypress forests in Alishan to the old streets of Tainan, there are many different sides of the country to discover. ...
2026-10-06 22:34:17 +0700
· 3 mins read
Life Experience
Life Experience
Access Tokens and Refresh Tokens: Why Do We Need Both?
I used to think authentication was simple. You log in, the server gives you a JWT, and you attach that JWT to every request. Something like: Authorization: Bearer eyJhbGciOiJIUzI1NiIs...Then the obvious question appears: Why not just make that token ...
2026-09-15 20:29:54 +0700
· 5 mins read
Software Engineer
Software Engineer
Interview
Interview
Common Mistakes When Using Sidekiq
Sidekiq is a popular background job processing library for Ruby that allows you to offload time-consuming tasks from your main application thread. While Sidekiq can significantly improve the performance and responsiveness of your application, it's es...
Ruby on Rails
Ruby on Rails
2024-08-27 21:25:30 +0700
·
3 mins read
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
Custom Fullscreen Button: A Cross-Browser Solution
Fullscreen functionality is a common requirement in web development, especially with media elements like custom video player. In this blog post, I'll share my experience working with fullscreen APITL;DRNote: On iOS browsers, the element must be a vid...
Frontend
Frontend
2024-07-10 21:59:43 +0700
·
2 mins read
Rails 7.2+: How to show all model attributes in Rails Console
With the release of Rails 7.2, a new change was introduced to the way ActiveRecord models are inspected in the Rails console. Prior to this version, calling inspect on an ActiveRecord model instance would display all the model's attributes by default...
Ruby on Rails
Ruby on Rails
2025-04-22 11:12:40 +0700
·
2 mins read
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