Today I Learned

A running collection of short, focused notes on things I learned (often the hard way) shipping production software — headless WordPress, Laravel, Next.js, Docker/Alpine, CSS, and the DevOps glue around them.

Each note is small on purpose: the problem, why it happens, and the fix. The kind of thing that costs an hour the first time and thirty seconds every time after, once it's written down.

Inspired by the TIL convention — capture the small wins so they compound.

Categories

git

• Use git worktrees for parallel agents/sessions
• How Co-authored-by: trailers actually work

WordPress

• WPGraphQL returns ACF select fields as an array
• WP-CLI needs a PHP binary with mysqli

Laravel

• Spatie multitenancy: queue tenant-awareness default
• Blade: @ directly before {{ }} breaks interpolation

MySQL

• Status ENUM truncation fails silently in the producer

Docker / Alpine

• musl drops LD_LIBRARY_PATH when ruid != euid

CSS

• Tailwind v4: .hidden loses to .flex/.grid/.inline-flex
• position: sticky breaks under an overflow ancestor

Next.js

• Tag-based ISR revalidation from a CMS webhook
• next/image remotePatterns for a headless CMS

DevOps

• Never chown -R a Plesk docroot
• Plesk nginx strips the WebSocket Upgrade header

Observability

• New Relic auto-RUM injects inline scripts and breaks strict CSP

AI / LLMs

• gemini-2.0-flash 404s on generateContent

Shell

• SSH heredocs mangle $ and can corrupt PHP

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License: MIT