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Notes & Tutorials

Hands-on write-ups from things I've built or worked through, kept here for anyone who finds them useful.

Spring Boot

Spring Boot, Stage by Stage

A 9-stage hands-on course building a real Library Management API from scratch: REST fundamentals, JPA persistence, validation & RFC 9457 errors, testing, JWT security, production config, and finally splitting it into microservices with RabbitMQ messaging.

Spring Boot JPA Spring Security Testing Microservices RabbitMQ
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Git & GitHub

Git & GitHub — A Developer's Field Guide

A 13-section reference for daily use: setup & identity, the core workflow, branching & merging, remotes, undoing things, inspecting history, the fork & PR workflow, the gh CLI, repo conventions, GitHub Actions basics, commit/PR etiquette, troubleshooting, and a full cheat sheet.

Git GitHub gh CLI GitHub Actions
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Kubernetes

Kubernetes Field Guide

Cluster architecture and node components, the core building blocks (image, container, pod), the workload controllers you'll actually use (ReplicaSet, Deployment, StatefulSet), liveness/readiness probes, and a full kubectl command reference.

Kubernetes kubectl Deployments StatefulSets
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