Lesson learned for migrating a theme to Bootstrap 4

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Migrating my blog to use Bootstrap 4

In the previous article, I mentioned the blog was migrated to Pelican. After that I customized it and add some new features. I found Bootstrap 3 was released for a few years and there would be no update. I tried to update the theme to Bootstrap 4.5. Let's talk about what is the lesson learned.

First of all, I am not a web developer. Creating or customizing the small themes make me learn a …

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Migrated from WordPress to Pelican

A flying Pelican

From WordPress to Pelican

My blog was migrated from WordPress to Pelican. I found WordPress is very easy to use at the beginning. Pelican is a static site generator (aka SSG). I tested Pelican and like it. It is small and responsive.

SSG had a major advantage on simplicity over WordPress or other Server Side Rendered (SSR) systems. You don't need to patch or upgrade the WordPress or the SSR systems. The static web pages generated by SSG are served directly by …

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2FA readiness of social media giants and tech giants

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2FA or two factor authentication is a mechanism of using another means of user authentication besides solely rely on password. 2FA or MFA (multiple factor authentication) would greatly increase the security. These are the common 2FA deployed in many internet web sites:

  • One time password send over E-mail or SMS
  • TOTP (Time-based One-Time Password algorithm)
  • U2F (Universal 2nd Factor)
  • WebAuthn (FIDO2 Web Authentication)

Now, most popular social media web sites and e-commerce sites had already supported at least one or multiple 2FA …

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SSD controllers and customization

The photo shows a macro of a silicon wafer.

A SSD controller manages the data stored on SSD and communicates with a computer or electronic device. It is a very important component and it would affect the performance of an SSD. I won't go into details about SSD controller here. Check the further reading section if you are interested.

It is very expensive (in millions of dollar) to develop a SSD controller. Most SSD manufacturers (for example: Corsair, Kingston, etc.) would not develop their own SSD controller. Instead, SSD manufacturers purchase …

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