A perfect Lighthouse on Astro and Cloudflare
The playbook behind kairn.in: static-first Astro, inline critical CSS, subsetted fonts, sized images, viewport prefetch, no default client JS, and sane cache headers.
Engineering
How we build, ship and run software that stays fast.
One waymark when we find something worth marking.
Engineering write-ups, AI field notes and product decisions from Kairn Labs. Roughly twice a month. No tracking pixels.
