Our nightly Velero backups reported 'Completed' every single night. Then we actually looked at what was inside them: nothing. Here's how a silent default in local-path-provisioner backed up 550 KB of metadata and zero files for 136 days — and how we found it, fixed it, and proved the fix with a real restore.

The 4% rule is a single number from a black box. Here's what happened when we applied normal infrastructure-engineering instincts — validate against known benchmarks, make the methodology inspectable, self-host the thing — to the math behind safe withdrawal rates, and the open-source tool that came out of it.

When your hosting provider goes down, you have two options: scramble or switch. We built an automated failover system using Cloudflare Workers, KV storage, and an on-site server that flips DNS within two minutes — at zero ongoing cost.

How we built a production mail server from scratch — Postfix, Dovecot, dual DKIM, DANE, DNSSEC, MTA-STS, WKD, and an SNI multiplexer — with Part 2 covering post-quantum OpenPGP on the horizon.

How I built and deployed a fully automated static blog with a custom theme, GitLab CI pipeline, Terraform infrastructure, and a perfect Lighthouse score — and what actually broke along the way.

A production migration from bare-metal LAMP to a single-node K8s cluster — covering namespace isolation, ExternalSecrets, cert-manager TLS, and the database name swap that nearly took down two sites simultaneously.