Custom Domain on GitHub Pages #1: Zero-Downtime Migration with Porkbun and Cloudflare DNS (CNAME Flattening & Universal SSL)
Hosting an engineering blog on GitHub Pages under username.github.io/project is one of the most cost-effective and friction-free setups for developers. You push markdown files, Git workflows trigger, and GitHub serves your static artifacts worldwide.
However, as soon as you consider serious branding and monetization, you hit an uncompromising roadblock: Google AdSense strictly bans free secondary subdomains like *.github.io from site application. Furthermore, any search engine authority (PageRank and Domain Authority) you build remains tied to GitHub's domain rather than your personal asset.
To build a professional engineering presence, you need an apex custom domain (e.g., globaldevlog.com). In this first installment of our static blog infrastructure series, we walk through the exact zero-downtime migration blueprint from jbjihwan.github.io/global_blog to https://globaldevlog.com, powered by a high-availability Porkbun + Cloudflare + GitHub Pages 3-tier architecture.