Pathways
A curated route across the library toward one goal. Where Explorations is browsed by topic, a Pathway is a curriculum you follow start to finish — and it deliberately crosses site boundaries, because real goals don't respect them.
Choose a Pathway
Debugging With Nothing But a Terminal
19 steps live · 4 sitesNo GUI, no dashboard — just the commands that turn a vague alert into a root cause, a fix, and a shipped change.
An alert fires and you're on a server with nothing but a terminal — no dashboard, no GUI, just a prompt. This pathway follows one incident from the first ssh connection to a merged fix: the pattern-matching and data tools that cut through logs and config, the terminal habits that keep you fast under pressure, and the git workflow that ships the change. It closes with the one genuinely new habit for this era — running more than one AI CLI in the same session and asking a second agent what it thinks of the first one's answer.
How Modern Software Really Runs on a CPU
16 steps live · 5 sitesFrom machine code to Kubernetes — the same problem, solved again at every altitude.
You write code, deploy it with kubectl apply, and a container starts somewhere. This pathway is what actually happens in between — from the CPU executing machine instructions, through the OS process model and Linux isolation primitives, to how Kubernetes decides where your workload runs and how much CPU it's allowed to use.
Put Your Kubernetes App on the Internet
13 steps live · 4 sitesIt runs in the cluster. Now give the world a URL that reaches it.
Your app is deployed and healthy — but only you can reach it, through kubectl and port-forwards. This pathway covers everything between your Service and a stranger's browser: how DNS finds you, how TLS earns the padlock, and the Gateway API front door that ties it all together.
How APIs Actually Work
10 steps live · 3 sitesPast curl and Postman to what is really happening on the wire.
You use APIs every day but the under-the-hood picture stays fuzzy: what an endpoint really is, where the front-end/back-end line sits, and how it all gets secured. This pathway walks from the core concept, to how an endpoint is exposed and protected, to seeing it live in your terminal.