Cloud & DevOps Engineer
Marcus covers Kubernetes, cloud infrastructure, and CI/CD. He's spent a decade running production systems at scale.
Articles by Marcus Lee
Clean Code Principles That Actually Hold Up in Practice
Not every 'clean code' rule ages well. Here's what actually improves real codebases, and what to ignore.
Understanding File Permissions in Linux (chmod, chown Explained)
How Linux's read/write/execute permission model actually works, what chmod's numeric codes mean, and when to reach for chown instead.
WSL2 Setup Guide: Running Linux on Windows for Development
How to install WSL2, pick a distro, and set up a proper Linux-based development environment on Windows — including the VS Code integration that makes it seamless.
Setting Up a macOS Development Environment from Scratch
A practical checklist for configuring a new Mac for software development — Homebrew, shell setup, essential tools, and the settings worth changing from defaults.
Git Hooks Explained: Automate Your Workflow
How Git hooks work, the most useful ones to set up, and why teams reach for Husky instead of raw hooks for anything shared across a repo.
Docker Compose for Local Development Environments
Using docker-compose.yml to spin up a full local stack — app, database, cache — with one command, and the patterns that make it actually pleasant to work with.
Kubernetes ConfigMaps and Secrets: A Practical Guide
How to externalize configuration and sensitive values from your container images using ConfigMaps and Secrets — and why Secrets alone aren't actually encryption.
CI/CD Pipelines Explained: From Commit to Production
What continuous integration and continuous deployment actually mean, how a typical pipeline is structured, and where teams commonly get the split wrong.
Infrastructure as Code: Why Terraform Won
What Infrastructure as Code actually solves, and why Terraform became the default choice over cloud-specific tools like CloudFormation.
AWS vs. Azure vs. GCP: Choosing the Right Cloud for Your Project
A practical comparison of the three major cloud providers — where each genuinely differentiates, and the factors that should actually drive the decision.
Understanding Cloud Cost Optimization Basics
Practical, high-leverage ways to reduce cloud spend — right-sizing, reserved capacity, storage tiers, and the monitoring habits that catch waste before it compounds.
Docker Multi-Stage Builds: A Step-by-Step Tutorial
Learn how to shrink Docker images and speed up builds using multi-stage builds, with a complete Node.js example.
Git Rebase vs. Merge: When to Actually Use Each
A clear, practical guide to choosing between git rebase and git merge — no dogma, just tradeoffs and real workflows.
How to Debug CrashLoopBackOff in Kubernetes
A systematic approach to diagnosing and fixing CrashLoopBackOff errors in Kubernetes pods.