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Explore my latest blog posts, cheatsheets, code snippets, DevTips, flashcards, glossary entries, quizzes, and roadmaps. Real-world insights from production environments and battle-tested practices.
Testing Terraform: Static Analysis, Native Tests, and Terratest
- Infrastructure as Code
- DevOps
- 20 Jul, 2026
- 07 Mins read
If you treat infrastructure as code, you have to test it like code. Most of us have lived the alternative. You change one input on a shared module, run a quick plan against staging, and merge. A few h
tRPC: End-to-End Type-Safe APIs in TypeScript Without Codegen
- Web Development
- Backend Engineering
- 20 Jul, 2026
- 08 Mins read
The line between the frontend and the backend has always been a place where types go to die. In a normal REST setup you define the shape of a request and a response on the server, then you write those
FinOps in Practice: How to Build a Cloud Cost Accountability Culture on AWS
- Cloud Computing
- DevOps
- 14 Jul, 2026
- 08 Mins read
Cloud computing changed how businesses pay for technology. Instead of a slow procurement cycle to buy physical servers, a single engineer can spin up thousands of dollars of infrastructure in minutes.
AWS DynamoDB CRUD Operations in Node.js with the AWS SDK v3
Quick Tip Wrap the low-level DynamoDB client in a DynamoDBDocumentClient so you pass plain JavaScript objects in and get plain objects back, then guard your writes with ConditionExpression an
Python Async HTTP Requests with aiohttp: Fetch Multiple URLs Concurrently
Quick Tip Reuse one aiohttp session, fan your requests out with asyncio.gather, and cap them with a semaphore to fetch hundreds of URLs in the time one loop would take. The Problem **The
Bash Retry Function: Automatically Retry Failing Commands with Exponential Backoff
- Devops
- Shell scripting
- 20 Jul, 2026
- 05 Mins read
Quick Tip Wrap any flaky command in one reusable retry function and stop re-running red pipelines by hand. The Problem The Problem Some commands fail for reasons that have nothing to
Building an Internal Developer Platform on Backstage and GitOps
- DevOps
- Platform Engineering
- 03 Aug, 2026
- 09 Mins read
Product teams were spending more time waiting on the platform team than building features. Spinning up a new service meant opening a ticket, waiting for someone to provision a repo, wire up CI, write
Zero-Downtime PostgreSQL Major-Version Upgrade at Scale
A multi-terabyte PostgreSQL 12 database was reaching end of life, and the business ran around the clock, so the usual answer of "schedule a maintenance window" was off the table. We upgraded it to Pos
Migrating a Monolith to Kubernetes Without a Big-Bang Cutover
- DevOps
- Cloud Native
- 20 Jul, 2026
- 07 Mins read
Almost every failed "let's move off the monolith" project shares one detail: the plan was a big-bang cutover. Rewrite in parallel, pick a weekend, flip the switch, and pray. This is the opposite of th
GitHub Actions Secrets and Environment Variables: Handle Config the Right Way
- DevOps & DevSecOps
- 08 Aug, 2026
- 04 Mins read
Why Secrets Handling Matters? Most CI leaks are config mistakes, not attacks Hey, want to stop leaking credentials in your pipelines? Most secret leaks in CI are not the result of some cl
Docker Multi-Stage Builds: Smaller, Safer Images for Production
- Kubernetes & Containers
- 27 Jul, 2026
- 04 Mins read
Why Multi-Stage Builds Matter? Small images are not just about disk space Hey, want to stop shipping a toolshed to production? If your Dockerfile builds and runs the app in one stage, you
ArgoCD GitOps: Sync Kubernetes Deployments Automatically from Git
- Kubernetes & Containers
- 22 Jul, 2026
- 04 Mins read
Why GitOps for Kubernetes? From kubectl apply to Git as the source of truth Hey, want to stop deploying to Kubernetes by hand? If your releases still come from someone running `kubectl ap
Terraform Associate Flashcards (TA-003)
- Terraform
- Certification
- Devops
- 61 Cards
- ~25 min
- 09 Aug, 2026
Full exam coverage for the HashiCorp Certified Terraform Associate (TA-003) exam using spaced repetition. Covers IaC concepts, CLI, HCL, state, modules, backends, and Terraform Cloud.
Kubernetes Administrator Flashcards (CKA)
- Kubernetes
- Certification
- Devops
- 54 Cards
- ~23 min
- 28 Jul, 2026
Full exam coverage for the Certified Kubernetes Administrator (CKA) exam using spaced repetition. Covers cluster architecture, workloads, scheduling, networking, storage, security, and troubleshooting.
AWS SysOps Administrator Associate Flashcards (SOA-C02)
- Aws
- Certification
- Devops
- 50 Cards
- ~21 min
- 28 May, 2026
Full exam coverage for the AWS Certified SysOps Administrator Associate (SOA-C02) exam using spaced repetition. Covers monitoring, reliability, deployment, security, networking, and cost optimization.
Kubernetes Advanced
- Kubernetes
- Platform
- 39 Terms
- 10 Aug, 2026
This glossary covers the advanced Kubernetes terminology platform engineers rely on, from scheduling and networking to storage, security, extensibility, and the workload controllers that keep applicat
Cloud Computing on AWS
This glossary covers the essential Amazon Web Services terms every cloud engineer and architect should know, from compute and storage to networking, databases, and the identity controls that keep it a
Networking Fundamentals
- Networking
- Fundamentals
- 47 Terms
- 28 May, 2026
This glossary covers the core networking concepts every developer, DevOps engineer, and system administrator should know, from how data is layered and addressed to how it gets routed across the intern
Spring Boot: Java Application Framework Essentials
- Spring Boot
- Java
- 20 Questions
- ~5 min
- 11 Aug, 2026
- Level: Intermediate
Spring Boot removed most of the ceremony from Java backend development, but the framework still does a lot of work you cannot see. This quiz walks through dependency injection, auto-configuration, RES
Java: Core Language & JVM Fundamentals
Java has quietly powered banks, Android, and countless backend systems for decades, and the language keeps evolving with records, sealed classes, and virtual threads. This quiz walks through the core
Rust: Ownership, Borrowing & Memory Safety
- Rust
- Systems Programming
- 20 Questions
- ~5 min
- 28 May, 2026
- Level: Intermediate
This quiz tests your grip on the parts of Rust that trip up newcomers and pay off later: ownership and moves, borrowing and lifetimes, traits and generics, pattern matching, error handling with `Resul
Backend Developer Beginner to Expert
- Web development
- All Levels
- 17 Stages
- 57 Topics
- 02 Aug, 2026
Backend Developer Beginner to Expert This roadmap walks you from your first server-side program to designing scalable, secure systems. Work through the stages in order: nail a language, the command
Frontend Developer Beginner to Expert
- Web development
- All Levels
- 18 Stages
- 81 Topics
- 28 May, 2026
Frontend Developer Beginner to Expert This roadmap walks you from absolute beginner to a strong, hireable frontend engineer. Work through the stages in order: the early ones build the mental model
Release Engineer Beginner to Expert
- Devops
- Cloud
- Release engineering
- All Levels
- 26 Stages
- 112 Topics
- 25 Apr, 2026
This roadmap takes you from release engineering principles and version control mastery through to advanced GitOps patterns and multi-account AWS delivery at scale. Each stage builds on the last treat