# Learn by doing: code a Web server in Node.js Most people use HTTP daily, but few understand its inner workings. This "Build Your Own X" book dives deep, teaching basics from scratch for a clearer understanding of the tools and tech we rely on. - Network programming. - Protocols & communication. - HTTP in detail. - WebSocket & concurrency. The project uses Node.js and TypeScript without any dependencies, but many concepts are language-agnostic, so it’s valuable for learners of any language. ## Beyond coding exercises At the end of each chapter, there are discussions about: - What’s missing from the code? The gap between toys and the real thing, such as optimizations and applications. - Important concepts beyond coding, such as event loops and backpressure. These are what you are likely to overlook. - Design choices. Why stuff has to work that way? You can learn from both the good ones and the bad ones. - Alternative routes. Where you can deviate from this book. ## Build your own X Why take on a build-your-own-X challenge? A few scenarios to consider: - Students: Solidify learning, build portfolio, stand out in future careers. - Developers: Master fundamentals beyond frameworks and tools. - Hobbyists: Explore interests with flexible, extensible projects. This is part of the “Build Your Own X” book series, which includes books on building your own Redis, database, and compiler. https://build-your-own.org