https://codes.metacog.co.kr/tags/frontend/Recent content in Frontend on CodesHugo -- gohugo.ioen© {year} jeonck. Distributed under [MIT](https://opensource.org/licenses/MIT).Mon, 21 Sep 2026 00:00:00 +0000https://codes.metacog.co.kr/posts/sign-in-gate-is-a-page-too/Mon, 21 Sep 2026 00:00:00 +0000https://codes.metacog.co.kr/posts/sign-in-gate-is-a-page-too/A gated app shows its login screen to everyone and its actual product to almost nobody. Putting a live sample on that screen took a few lines — and immediately exposed a CDN that had been failing silently for anyone whose network was not mine.