Engineering notes

Practical software engineering articles for production teams.

PHP, JavaScript, Node.js, AWS, platform work, architecture patterns, database changes, and integration details written around decisions that matter in maintained applications.

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Production request path through DNS, Cloudflare, Apache, PHP, and MySQL

Infrastructure7 min readJul 26, 2026

A production checklist for PHP behind Cloudflare and Apache

A release checklist for the complete request path: DNS, Cloudflare, TLS, Apache rewrites, PHP runtime, trusted proxy headers, caching, security boundaries, and rollback.

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DNS, Cloudflare edge, SSL certificate, CDN cache, and application origin layers

Infrastructure6 min readJul 3, 2026

Cloudflare, SSL, CDN, and DNS troubleshooting without guesswork

A layered workflow for DNS authority, proxy state, origin TLS, redirect loops, cache behavior, real client IPs, and safe rollback.

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