How Not to Node.js

Write Node.js code that scales, whether it comes from you or AI, and avoid the anti-patterns that cause performance and production problemsKey FeaturesIdentify and fix common Node.js anti-patterns before they impact productionAvoid performance bottlenecks by understanding Node.js internalsApply proven patterns to write clean, maintainable, and scalable Node.js codeBook DescriptionNode.js makes it easy to get started, but just as easy to get things wrong. Whether you're writing code yourself or using AI in your development workflow, How Not to Node.js takes a practical, no-nonsense approach to uncovering the most common mistakes developers make, and shows you exactly how to avoid them. The book is structured around real-world anti-patterns, guiding you through how to identify, understand, and fix problematic code. You ll start by learning how patterns and anti-patterns shape application design, before diving into asynchronous pitfalls, event loop behavior, and error handling. As you progress, you ll explore architectural concerns such as logging, environment management, and memory leaks. By the end, you won t just know how to write or review Node.js code, you ll know how to avoid writing bad Node.js code, building applications that are clean, scalable, and production-ready.What you will learnRecognize common JavaScript and Node.js anti-patterns and refactor them effectivelyWrite clean, maintainable code by avoiding common code smells and bad practicesManage environment variables securely and efficientlyKeep the event loop responsive by avoiding blocking code and offloading CPU-heavy workDiagnose and fix memory leaks using profiling and heap analysis toolsHandle asynchronous operations correctly using promises and async/awaitWho this book is forThis book is for Node.js developers who want to level up from writing code that works to writing code that scales. Whether you re an early-career developer struggling with asynchronous patterns or an experienced engineer dealing with performance and production issues, this book will help you identify what s going wrong and how to fix it.