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Next.js posts

Server rendering, the App and Pages routers, caching behaviour, and the hydration mismatches that only ever show up in production.

2 posts in Next.js

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Abstract purple light streaks in motion, suggesting duplicated renders

Next.js8 Jul 20266 min read

Next.js Hydration Mismatch: Random UUIDs Render Different HTML on Server and Client

Generating field identifiers with a random UUID looked harmless until React started warning about mismatched markup on every page load. The server and the browser were each producing a perfectly valid id, just never the same one.

Gallery wall of framed collage boards lit by spotlights

Next.js18 Mar 20266 min read

Next.js Image Optimization Doubles Your Build Time on a Large Gallery

A photography page with four hundred images turned a two minute build into a fourteen minute one. The image component was not the problem. Asking it to do the work at build time was.