Cybersecurity

What is Supply Chain Security? Dependencies, SBOMs, and the Attack That Hit 2.6 Billion npm Downloads

Your application is only as secure as every package it depends on. In September 2025, attackers compromised 27 npm packages with 2.6 billion weekly downloads by phishing one maintainer.

Cybersecurity

What is Cross-Site Scripting (XSS)? The Attack That Turns Your Website Against Your Users

XSS injects malicious JavaScript into web pages served to other users — stealing sessions, redirecting to phishing pages, or silently exfiltrating data. It's been in the OWASP Top 10 since 2003. Here's every type, how each one works, and how to actually fix them.

Cybersecurity

What is SQL Injection? The Attack That's Been Destroying Databases Since 1998

In 2008, attackers used SQL injection to breach Heartland Payment Systems, a payment processing company. They stole 130 million credit and debit card numbers. The breach cost Heartland over $140 million in settlements and fines. The CEO described it as an "international cybercrime ring." The technical execution was

Systems Administration

What is a Web Server? Apache, Nginx, and How the Internet Delivers Web Pages

A web server accepts HTTP requests and returns responses. Apache has been doing this since 1995. Nginx rebuilt the model in 2004 and took over the cloud. Here's how they work, how they differ, and how to pick between them.

Cybersecurity

What is Encryption? The Math That Keeps Your Data Private

Encryption transforms readable data into unreadable ciphertext that only someone with the right key can reverse. It's what makes HTTPS, messaging apps, banking, and password storage work. Here's how it actually functions.

Cybersecurity

What is Cybersecurity? The Field That Keeps the Internet From Collapsing

Cybersecurity is the discipline of protecting systems, networks, and data from attack, damage, and unauthorized access. Here's what it actually covers, how attacks work, how defense works, and why every developer needs to understand it.

Self Hosting

Why I Switched from WordPress to Ghost for CoderOasis

I exclusively used WordPress somewhere between 2008 to 2019 – if not earlier than that for me. At least eleven years. That's a good long time to dedicate to a platform. And honestly? For most of that time, I thought WordPress was fine. I was managing my blog, publishing

Web Development

Writing Your Own API From Scratch in TypeScript

Tutorials that show you how to build an API in 50 lines of code are lying to you. This is what a production TypeScript API actually looks like — authentication, validation, error handling, rate limiting, database connection pooling, structured logging, and a test suite. All of it, from scratch.

Web Development

What is an API? The Contract That Makes Software Work Together

An API is a contract between two pieces of software. One side defines what requests it accepts and what responses it sends. The other side follows that contract to get work done. Every app on your phone, every website pulling live data, and every service talking to another service uses APIs.

Web Development

What is MySQL? The Database That Powers Most of the Web

MySQL runs WordPress, which runs 43% of the web. It runs Facebook's original backend, YouTube, and GitHub. It is also a database with genuine quirks that bite people who do not know about them. Here is the full picture.

Software Development

What is a Database? The Foundation Every Application Is Built On

A database is organized data with a system for storing, retrieving, and modifying it reliably. Every application you have ever used depends on one. Here is how they actually work, what the different types do, and what separates a well-designed schema from one that will wreck you at scale.

Web Development

What is WebAssembly? The Binary Format Eating the Web (and Leaving the Browser)

WebAssembly started as a way to run C++ in a browser without recompiling to JavaScript. Figma, Google Earth, AutoCAD, and video codecs run in WASM. The server-side ecosystem is growing fast enough that cloud providers are building WASM runtimes into their infrastructure. Here is how it works.

Web Development

What is Flask? The Python Micro-Framework That Gets Out of Your Way

Flask started as an April Fools joke and became one of the most widely deployed Python web frameworks in production. Here is how it works, what makes it different from Django, and what a real production Flask API looks like.

Web Development

What is Django? The Python Framework That Runs Instagram

Django is the Python web framework that ships with an ORM, admin panel, authentication, and migrations out of the box. Instagram built its 2-billion-user backend on it. Here is how it works and when you should use it.

Programming

What is Python? Enterprise, Data Science, and the Backend of the Web

Python runs Instagram, Dropbox, Netflix, Spotify, and Reddit. It trains the models that power modern AI. It processes petabytes of data in enterprise pipelines. And I ignored it for years because I thought it was just for academics. Here is what changed my mind.

Web Development

Building a Modern App With React, Vite, and Tailwind CSS: The Complete 2025 Guide

React for the UI, Vite for the build tooling, Tailwind for the styles. This is the stack most new frontend projects start with in 2025. This guide wires all three together from scratch and builds a real application structure you can actually start a production project from.

Web Development

What is Tailwind CSS? The Utility-First CSS Framework Developers Either Love or Hate

Tailwind is a utility-first CSS framework. You style elements by stacking single-purpose class names directly in your markup. Half the dev community hated this idea, then started using it. Here's why it works and what you need to know.

Web Development

What is Vite? The Build Tool That Made Frontend Development Fast Again

Vite replaced Webpack for a lot of teams without much fanfare. Native ES modules, a dev server that starts in milliseconds, and a production build that doesn't require understanding 300 lines of config. Here's how it works and why the switch is worth it.

Web Development

The JavaScript Event Loop: Call Stack, Task Queue & Microtasks

A production-focused deep dive into how the JavaScript event loop actually works — call stack mechanics, microtask vs. macrotask priority, connection pooling, atomic rate limiting, parallel async patterns, and graceful shutdown. Every concept is backed by enterprise-ready code you can use directly.

Web Development

What is React? The JavaScript Library That Changed Frontend Development

React is a JavaScript library for building user interfaces. Facebook built it in 2013, open-sourced it, and the entire frontend ecosystem reorganized itself around it. Here is how the component model works, why it took over, and what you need to know before writing a single line.

Software Development

Deep Dive! Using Deno and Bun in Production Environments

Past the benchmark charts and feature matrices — here's what Deno's permission system and Bun's native APIs look like when you build something real with them. The gotchas, the sharp edges, and the parts that are actually better than Node.

Web Development

Node.js vs Deno vs Bun: Picking the Right JavaScript Runtime in 2026

Three JavaScript runtimes. Three different philosophies on what the developer experience should feel like. Here's how they compare on performance, ecosystem, tooling, and the only decision that actually matters for production.

Web Development

What is Bun? The JavaScript Runtime That Made npm Install Fast

Bun is a JavaScript runtime, package manager, bundler, and test runner in a single binary written in Zig. It's also the fastest thing to happen to JavaScript tooling in years — and it runs your existing Node.js code.

Web Development

What is Deno? Ryan Dahl's Second Attempt at a JavaScript Runtime

In 2018, Ryan Dahl stood at JSConf EU and apologized for Node.js. Then he built Deno to fix the things he got wrong. Here's what changed, what the security model actually looks like, and whether switching is worth it.

Web Development

What is Node.JS? Using JavaScript without the Browser

Node.js took the V8 engine out of Chrome and ran it on a server. That sounds like a small change. What it actually did was flip how developers think about I/O — and spawn an ecosystem of two million packages.