Resilience at the Edge: Our Maintenance Architecture

The "White Screen of Death"

When backend databases fail, most React apps crash white or spin forever. We didn't want that for Kernex.

We engineered a Middleware-First maintenance strategy.

How it Works

Before a request even hits our React server, our Edge Middleware checks the status. If MAINTENANCE_MODE is valid, we rewrite the response to a static maintenance page.

This means that even if our entire backend infrastructure vanishes, the user still gets a beautiful, informative page telling them what's up.

The Bypass Key

Developers can still access the site using a secret bypass token, allowing us to verify fixes in production while general traffic is held back. Transparency + Control.