Engineering Notes & Insights

Architecture decisions, performance audits, and operational workflows from delivered systems. Written to be genuinely useful to technical teams.

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Featured · Performance7 min read·2026-08-12

Why your Next.js catalogue is still slow on mobile

A 90-plus Lighthouse score on your laptop with a fast connection tells you almost nothing. Here is where catalogue performance actually goes, and the four things that usually fix it.

By Ressan engineeringRead note

Why your Next.js catalogue is still slow on mobile

Performance · Core Engineering Note

A 90-plus Lighthouse score on your laptop with a fast connection tells you almost nothing. Here is where catalogue performance actually goes, and the four things that usually fix it.

Why we write:

If an engineering decision cannot be explained simply in writing, it was a preference rather than an architecture decision.

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