Tiny explainers grouped by topic. Spend less time Googling, more time building.
The 80% you actually need: Pods, Deployments, Services, Ingress/Gateway, Requests/Limits, Probes, Config & Secrets, HPA, storage, and the kubectl commands you’ll use daily.
DNS changes feel slow because of caching everywhere: resolvers, browsers, OSes, CDNs, and parent zones. Here’s the mental model, typical timelines, and how to plan zero‑drama cutovers.
A no-jargon primer on containers: how they isolate processes, how images/layers work, and what Docker/Kubernetes actually do.
Step-by-step: create an SSH key, add it to a server, use ssh-agent, set up ~/.ssh/config, and harden your SSH settings. Works on macOS, Linux, and Windows.
A quick mental model to read and write cron schedules without Googling.