Building a Tiny URL Shortener in 30 Lines of Go
Build a complete URL shortener in 30 lines of Go using only stdlib. Generates short codes, handles redirects, stores in memory - perfect learning project.
0x.run
Tech tutorials, programming guides, and developer resources
Why Minimalist Tools Win: Lessons from Unix Philosophy
Unix philosophy teaches us that simple, focused tools that do one thing well often outlast complex alternatives. Modern examples like grep, git, and curl prove this approach still works.
UUID v7: The New UUID That Actually Makes Sense
UUID v7 puts timestamps at the beginning, making database indexes happy. I saw 3x better insert performance and 50% smaller indexes after migrating. Here's how and when to switch.
CORS Errors: Every Fix That Actually Works
CORS errors are never quite the same. Here's every fix I've used in production, why each error happens, and actual code you can copy-paste for your specific situation.
Why I Stopped Using Frameworks for Everything
Frameworks solve real problems but add complexity. Use them when they solve problems you actually have, not because they're trendy. Sometimes vanilla code is faster to write and maintain.
From JSON to MsgPack: Why Binary Formats Matter
Binary formats like MsgPack are 20-50% smaller than JSON and much faster to parse. Use for high-performance APIs, mobile apps, and data storage.
Why Rust Is Eating the World (and Where It Won't)
Rust excels in systems programming, WebAssembly, and infrastructure tools, but struggles with rapid prototyping, data science, and mobile development.
WebAssembly in 2025: How to Run Code Directly in the Browser
WebAssembly lets you run compiled languages like C, Rust, and Go in browsers at near-native speed. Perfect for performance-critical apps, games, and computational tasks.
15 Essential Linux One-Liners for Developers
Master these 15 Linux command combinations to handle logs, find files, process data, and monitor systems like a pro. Copy-paste ready with explanations.
What Does "0x" Mean in Programming, Crypto, and Everyday Tech?
0x is the universal prefix for hexadecimal numbers — a compact, human-friendly way to represent binary values used in code, memory addresses, crypto wallets, and even CSS color codes.