artifacts/

Two-factor authentication has a reputation for being cryptographic magic. The common case is forty lines of code. This page builds it from nothing — a working authenticator you can watch…

A beginner-first Docker handbook: images and layers, every Dockerfile instruction, volumes, networking, Compose, a full command reference and a troubleshooting table organised by symptom.

The nine things a Go service is actually built out of — structs, embedding, interfaces, enums, generics, goroutines, channels, mutexes, waitgroups. Each one is worked three times: the…

A beginner-first Kubernetes handbook: what the cluster actually does, the objects you use daily, a kubectl reference and a troubleshooting table organised by symptom.

Every box in a system diagram is there because something broke. Step through the build and watch each one break: the load balancer, the session store, the index, the cache, the replicas…