Vibe coding is powerful. It makes you faster. But if you use it for everything, you will build fragile software, miss critical bugs, and slowly lose the skills that make you a good developer. This article is the honest guide. Six situations where you should NOT vibe code — and what to do instead. If you are new to vibe coding, start with What is Vibe Coding? first. This article assumes you already know the basics. ...
You have read about vibe coding. You have picked your tool. Now it is time to actually do it. This article walks you through a complete vibe coding session — step by step, with real prompts and real AI output. We will build a working CLI tool from nothing. By the end, you will understand the core cycle of vibe coding: prompt, review, test, iterate. If you have not set up your tools yet, read the Claude Code Setup Guide or install Cursor first. For help choosing, see Choosing Your AI Coding Tool. ...
Docker is the most popular containerization tool in the world. According to the 2025 Stack Overflow Developer Survey, Docker is one of the most widely used tools among professional developers, with usage continuing to grow year-over-year. But what is Docker? And how is it different from a virtual machine? In this tutorial, you will learn what Docker is, how containers work, and why developers use Docker for everything from local development to production deployments. ...
You want to start vibe coding. You have read the guides. You are ready. But there are three major tools — Claude Code, Cursor, and GitHub Copilot — and everyone has a different opinion about which one is best. Here is the truth: the best tool depends on how you work, what you build, and how much you want to spend. This article helps you make that choice. If you want a feature-by-feature comparison, read our Cursor vs Claude Code vs Copilot article first. This article goes deeper — it covers stacking tools together, budget tiers, and newer tools entering the market. ...
Every time you type a web address and press Enter, a hidden lookup runs before the page even starts loading. Your computer does not know where the website lives. It only knows its name. This post explains exactly how DNS turns that name into a number your computer can connect to. In simple steps. The Problem: Names vs Numbers Every device on the internet is reached by an IP address — a number like 142.250.72.196. Routers move traffic using these numbers, not words. ...
This is the final article in the DevTools series. In the previous 17 articles, you learned Git, Docker, and SQL separately. Now you will use all three together to build and deploy a real project. We will build a simple task management API with a PostgreSQL database. You will set up a Git repository with feature branches, write the API, Dockerize everything, add a CI/CD pipeline with GitHub Actions, and deploy it to a server. ...
You have been practicing with SQLite. It is great for learning. But for real projects, you need a real database. PostgreSQL (often called “Postgres”) is the most popular open-source relational database. It is used by companies of all sizes, from startups to enterprises. In this article, you will set it up, connect to it, and learn its unique features. In the previous article, you learned about indexes and performance. Now you will put everything together with a production-ready database. ...
Your queries work. But they are slow. A simple SELECT takes seconds instead of milliseconds. On a table with millions of rows, it could take minutes. The fix is almost always the same: add an index. In the previous article, you learned about window functions. Now you will learn how to make all your queries run fast. What Is an Index? Think of a book’s index at the back. If you want to find “window functions” in a 500-page book, you have two options: ...
GROUP BY is great for summaries. But it collapses your rows. You get one row per group. What if you want the summary and the individual rows at the same time? That is what window functions do. They calculate across rows without removing any of them. In the previous article, you learned about aggregation and subqueries. Window functions are the next level. What Are Window Functions? A window function performs a calculation across a set of rows that are related to the current row. This set of rows is called a window. ...
You know how to get individual rows. But what if you need answers like “How many books did we sell?” or “What is the average book price?” That is where aggregation comes in. In the previous article, you learned how to combine tables with JOINs. Now you will learn how to summarize data across many rows into a single answer. Aggregate Functions Aggregate functions take many rows and return a single value. ...