DevOps & Cloud

Master the networking fundamentals every DevOps engineer must know from IP addressing to Load Balancer and VPNs. Continue reading on Medium »

Infrastructure as Code (IaC) is a DevOps approach where infrastructure is defined and managed using code instead of manual setup. This… Continue reading on Medi

The Bridge: mapping Android architecture to AWS cloud architecture, side by side For about a year,...

GitOps enables GDPR-compliant Kubernetes platforms with immutable audit trails, policy enforcement, and automated secrets management under EU regulations.

Compare FluxCD vs ArgoCD for Kubernetes GitOps. Learn architectural differences, design philosophies, and choose the right engine for your platform.

When production blinks, engineers reach for logs, metrics, and runbooks—not another generic chatbot....

The Quest Begins (The "Why") Look, I’ll be honest: the first time I tried to ship a tiny...

Deploying AWS Config conformance packs across an Organization sounds like a solved problem until Terraform sits on Still creating... for… Continue reading on Me

I had read about dead letter queues during exam prep and thought I understood them. Then I helped implement one in a real SMS platform and… Continue reading on

65% AWS cost reduction ($3,850 → $1,330 / month) via safe legacy decommissioning, zero downtime for...

Last year my side project was running on AWS. A t3.small EC2 instance, an RDS PostgreSQL db.t3.micro,...

Deploying AWS Config conformance packs across an Organization sounds like a solved problem until...

A practical guide to Redis caching, TTLs, eviction, invalidation, cache-aside, and the real tradeoffs behind fast systems Continue reading on DevOps.dev »

If you’ve ever opened AWS EC2 and seen names like t3.micro, m6i.large, or c7g.xlarge, you’ve probably wondered: Continue reading on Medium »

Every production environment generates logs. Continue reading on Medium »

A practical comparison of the 10 best microservices monitoring tools in 2026 — including OpenObserve, Grafana LGTM, Datadog, Dynatrace, and more. Find the right

Everyone talks about observability like it is a solved problem. Pick a stack, wire it up, done. In...

GitHub Actions is a powerful way to automate your testing, but getting that first pipeline to run can be tricky. Continue reading on Medium »

Today’s task was to install and configure IPtables on multiple servers. This seemed like a simple task. It wasn’t. This was not only a… Continue reading on Medi

When people start using n8n, they usually focus on workflows. That makes sense. The visual editor,...

What I learned by writing down every outage I worked on, organized by shape rather than cause. Continue reading on Javarevisited »

Your owner-level control panel lives here — global stuff that isn't tied to any one agent, kept in...

One of the biggest mistakes I made as a dev was assuming that if the app wasn’t crashing, or if users weren’t reporting visible bugs… Continue reading on Medium

A war story about wiring up servers and boxes scattered across networks I don’t control, using nothing but outbound SSH Continue reading on Medium »

# How I Built a Serverless Resume on AWS (The Cloud Resume Challenge) The Cloud Resume Challenge is...

How I managed different Wazuh agent ossec.conf profiles using inventory-owned files, host variables, and Ansible deployment roles. Continue reading on Medium »

A step-by-step guide to deploying modern web applications with confidence. Continue reading on Medium »

Most newsletter platforms charge you the moment your list grows. Mailchimp locks analytics behind a paywall. ConvertKit charges $25/month… Continue reading on M

Rolling checksums, strong hashes, and the rsync protocol step that decides which bytes never travel — walked through end to end. Continue reading on Medium »

Every major developer platform now ships an MCP server. Stripe, GitHub, Supabase, Cloudflare, Sentry,...

It's 2 AM. Your coding agent is refactoring a microservice. It decides the best path forward is to...

In my previous blog, I explored running 53 AWS services locally using Floci without creating an AWS account or worrying about cloud bills. Continue reading on A

A coding agent created 47 GitHub issues in 90 seconds. Each one was titled "Bug: stale cache in auth...

A Complete Guide to Containerizing Your .NET Applications Continue reading on Write A Catalyst »

The Questions That Separate Engineers Who Know Tools From Engineers Who Understand Systems Continue reading on Medium »

Your stack has a memory. It remembers configuration. It remembers resource state, change timestamps,...

A Go Prometheus exporter that catches what an uptime ping misses on a video aggregator: stale per-re

A 5-minute tour of Terraform for engineers who are tired of doing infrastructure the hard way. Continue reading on Medium »

The exam isn’t cheap and it isn’t multiple choice. Here’s the real cost, the real salary payoff, and how to know if you’re ready. Continue reading on Medium »

Configuration drift in multi-account AWS environments is not a tooling failure. It is a structural consequence of manual, per-account governance that

 A beginner’s guide to understanding jump servers before everyone tells you to skip them entirely Continue reading on Medium »

This article was originally written in Japanese and published on Qiita. It has been translated with...

Here's a fact that's easy to forget until it bites you: a Terraform state file stores resource...

Today I deployed a Node.js application on AWS for the first time and learned several important cloud and deployment concepts along the way… Continue reading on

A small Go hub, simple agents, and enough monitoring for the awkward middle between nothing and Prometheus. Continue reading on The Ordinary Programmer »

CrashLoopBackOff means your container starts, crashes, and Kubernetes keeps restarting it. Here is h

The incident started the way they always do: a monitoring alert, then another, then the dashboard...

Managed platforms are wonderful until the invoice arrives. For most side projects and early products,...