#Devops
22 articles tagged "devops".
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.
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.
Core AWS Services Every Developer Should Know
A practical map of the AWS services you'll actually touch as a developer — compute, storage, networking, and databases — and how they fit together, not just what each one is.
Docker Networking Explained: Bridge, Host, and Overlay Modes
Why containers can (or can't) reach each other and the outside world depends entirely on which network driver they're using — bridge, host, and overlay explained with real examples.
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.
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.
Deploying a 3-Tier Application on AWS with Public and Private Subnets
A full walkthrough of the standard AWS 3-tier VPC architecture — web tier, app tier, and data tier, each in the right subnet, with security groups scoped correctly between them.
systemd and Linux Services Explained: Managing Background Processes
How systemd actually manages services on modern Linux — unit files, enabling vs. starting, and the systemctl/journalctl commands you'll use to keep a background process running reliably.
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 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.
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 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.
GitHub Actions Reusable Workflows: Build CI/CD Templates Once, Use Everywhere
How to stop copy-pasting the same GitHub Actions YAML across repos using reusable workflows and composite actions — with real examples of both.
Argo CD and GitOps: Continuous Delivery for Kubernetes
How Argo CD implements GitOps in practice — Applications, sync policies, App of Apps, and the real workflow of shipping to Kubernetes through Git.
AWS Cost Optimization: A Service-by-Service Playbook
Where AWS bills actually accumulate — EC2, S3, data transfer, NAT Gateways, and load balancers — and the specific levers for each, beyond generic right-sizing advice.
How to Debug CrashLoopBackOff in Kubernetes
A systematic approach to diagnosing and fixing CrashLoopBackOff errors in Kubernetes pods.
AWS Lambda and Event-Driven Architecture with EventBridge
How Lambda and EventBridge fit together to build event-driven systems on AWS — event patterns, fan-out, retries, and where this architecture actually beats a always-on server.
Git Bisect: Finding the Commit That Broke Something
When a bug appeared somewhere in the last 200 commits and you have no idea which one, git bisect finds it in log2(n) steps instead of manually checking each one.
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.
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.
What Is GitOps? Principles, Workflow, and Why Teams Adopt It
GitOps means Git is the single source of truth for your infrastructure and deployments, reconciled continuously by an automated controller. Here's what that means in practice.
Karpenter: Faster, Simpler Kubernetes Autoscaling on AWS
What Karpenter actually does differently from the Cluster Autoscaler, how it provisions nodes in seconds instead of minutes, and how to configure it safely on EKS.
Explore other topics
Want more like this?
Join developers getting our best tutorials weekly.