DevOps

Foundation vs. Instruct vs. Chat Models: One Question, Three Answers

A hands-on tutorial you can run for free in Google Colab. Run it yourself: open foundation_instruct_chat_tutorial.ipynb in Google Colab and run every …

The Complete Retrofit Lifecycle in a Real Android App

Most Retrofit tutorials show you isolated code snippets. This article traces the entire lifecycle of a Retrofit call — from app startup to data appear…

JWKS explained: what every developer should know

When it comes to security, certificates are used everywhere since the early days of the web. While storing them in PEM/DER format has always been comp…

How I Built Production-Grade AI Systems While Still a Student

🚀 Hello, DEV Community! I'm Nader Al Shawki , a final-year AI Engineering student at Al-Razi University, Yemen. This is my first post here, and I'm ex…

Clean API Design in Node.js: A Practical Guide

Most Node.js APIs start the same way. A server.js file. A few routes. Maybe an app.js if you've read a tutorial. Everything in one place because the a…

HTTP vs HTTPS — What Actually Happens When You Visit a Website

By Sailee Shingare | M.S in Computer Science, Northern Illinois University Every time you visit a website, your browser and the server have a conversa…

Your First App Idea Is Hiding in a Group You Already Belong To

The worst place to look for your first app idea is nowhere. That sounds obvious, but it is what a lot of people do. They sit down, open a notebook, st…

What is DevOps? A Plain English Guide

Pipeline & Prompts | Byte size guides on DevOps, Cloud and AI Ever Wondered How Netflix Never Seems to Go Down? Think about this for a second. Net…

Your Postgres will die at 50 concurrent users, not 50,000. Here is the connection pooling guide nobody handed you.

Disclosure: I am a senior backend tech lead in Paris and I run HostingGuru, a small European PaaS for solo founders and small teams. This article ment…

Your .env file is probably already in your Git history. The 15-minute audit (and the 5 habits that stop new leaks for good).

Disclosure: I am a senior backend tech lead in Paris and I run HostingGuru, a small European PaaS. This article mentions HostingGuru once near the end…

Wildcard DNS Records: Uses, Risks, and Best Practices

A single DNS record can answer for an unlimited number of subdomains. Add one wildcard entry, and suddenly anything.yourcompany.com , literally-anythi…

ATS-Friendly Resume Tips: How to Beat the Bots and Reach a Human Recruiter (2026)

You applied to 30 companies. Heard back from none. Your skills match the job description. Something is wrong. Most likely culprit: ATS — the invisible…

Is DevOps Worth Learning in 2026? An Honest Answer for Indian Freshers

Key Takeaways Yes, DevOps is worth learning in 2026 but only if you approach it with the right stack, not just theory. Freshers can realistically star…

How Recruiters Scan Resumes in 6 Seconds (What They Actually Look For)

How Recruiters Scan Resumes in 6 Seconds (What They Actually Look For) Most job seekers imagine recruiters carefully reading every word on their resum…

Docker Security Best Practices for Beginners

Docker is a game-changer for developers—making it easier to package, ship, and run applications. But with great power comes great responsibility. Whet…

What Are the Basic Concepts of Coding? A Complete Beginner's Guide

Have you ever wondered how websites, mobile apps, video games, or even calculators work? Behind all of these technologies is something called coding .…

Give Your Local AI Tool-Calling Superpowers with Open WebUI and MCP

Want a ChatGPT-like experience where your AI can search the web, read your files, query databases, and run code? Open WebUI + MCP makes it possible - …

While My Friends Were Playing Games, I Was Pressing BREAK

How a curious kid with a ZX Spectrum became an engineer who builds AI from scratch When I was a kid in the early '90s, every boy in my class dreamed a…

Picking a Phone Verification Method: SMS, Flash Call, Phone Call, and Data Verification

When your app needs to confirm that a user actually owns the phone number they gave you, the pattern looks the same from the outside: send something t…

Build a Private AI App Platform with Dify and Ollama

Build custom AI apps - chatbots, RAG pipelines, and agents - entirely on your own hardware with Dify and Ollama. No monthly fees, no data leaving your…

CKA Overview & Exam Pattern: The Kubernetes Certification That Actually Tests Your Skills

🚀 CKA Exam Overview: What Every Kubernetes Engineer Should Know Before Starting If you're working in DevOps, Cloud Engineering, Platform Engineering, …

My First Day at a developer Bootcamp: What I Experienced as a Beginner

Starting a developer bootcamp is both exciting and a bit overwhelming. On my first day, I didn’t expect to understand everything—but I was ready to le…

How to Use Python's logging Module Like a Pro — From Beginner to Production Setup

How to Use Python's logging Module Like a Pro — From Beginner to Production Setup Python's built-in logging module is one of those tools every develop…

HLD Fundamentals #1: Network Protocols

Network Protocols Network protocols define how computers communicate over a network. Whether you're opening Instagram, sending a WhatsApp message, wat…

"My 90-Day Journey Learning AWS Cloud from Zero" This will, ✅ Get you noticed by recruiters. ✅ Show your knowledge. ✅ Build your online presence. ✅ Help others like you.

I Built a Developer Tool in 2 Days. Distribution Took 2 Weeks and Still Counting.

This isn't a success story. It's an honest account of what it actually feels like to build something real from India and try to get the world to notic…

I Built a Search Engine That Understands Meaning — in ~150 Lines, Zero API Keys

Type "animals that live in the ocean" into a normal search box and it hunts for the words animals , live , ocean . An article titled "Blue whale" that…

Coder, Programmer, and Software Developer: Understanding the Journey

Many people use the terms coder, programmer, and software developer interchangeably. While they overlap, they represent different levels of responsibi…

Teach Your Agent to Forget (On Purpose)

Hello, I'm Maneshwar. I'm building git-lrc, a Micro AI code reviewer that runs on every commit. It is free and source-available on Github. Star git-lr…

I lost my entire dev environment at 10pm. Here's how I recovered.

Last night I accidentally signed out of an Apple ID on my MacBook. In seconds, my Desktop vanished. My projects — gone. VSCode — gone. Everything I'd …