android
APK vs AAB: Everything You Need to Know About Android App Formats
A deep dive into what APK and AAB files are, how they work, who created them, and why the Google Play Store prefers AAB over APK.
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Thoughts on Linux, Cybersecurity & Code
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astro I Built a Free, Fully Automated Email Notification System for My Blog — Here's Everything I Learned
A beginner-friendly, deep-dive walkthrough of how I built a zero-cost email notification system for my Astro blog using Resend, Firebase, Vercel, and GitHub Actions — including every concept explained from scratch and every error I hit along the way.
math The Hidden Math Behind Your Bank Card: The Luhn Algorithm Explained
Every time you type a card number online, something checks it before your bank even sees it. That something is a 65-year-old math formula. Here is how it works.