cheatsheet

I still remember the first time a regular expression broke my code at 2 AM. I was trying…

The first time I had to troubleshoot a DHCP outage, it was on a Friday afternoon, half the…

DNS breaks more mornings than any other piece of infrastructure I work with. A site goes down, an…

Subnetting is one of those skills that feels impossible until it suddenly clicks, and then you can’t understand…

I’ve spent more hours than I’d like to admit staring at hexadecimal address blocks trying to remember whether…

Wireshark is one of those tools I use constantly, but for years I only ever remembered about 20%…

I’ve been working with MySQL for years now, and if there’s one thing I’ve learned, it’s that nobody…

I switched between relational and document databases enough times over the years that I finally got tired of…

I’ve spent years bouncing between servers, VMs, and my own laptop, and if there’s one skill that has…

I’ve been living inside GitLab for most of my DevOps work — pushing code, wiring up pipelines, chasing…