A. Jobaer

Understand the event loop. Avoid blocking it. Master Node.js. This book demystifies the core of Node.js - the event loop - and teaches you how to use it efficiently and safely in real-world systems. You'll learn how Node.js schedules work, handles concurrency, and delivers performance from a single thread. More importantly, you'll discover how to avoid event loop blocking, the silent killer of performance in production. Inside the book: How Node.js handles concurrency with a single thread The real differences between setTimeout, setImmediate, and process.nextTick How each event loop phase works and what code runs when Why non-blocking doesn't always mean fast How to design resilient, efficient backend architectures Proven techniques for avoiding event loop blocking under real workloads  Who this book is for: Intermediate JavaScript developers leveling up to backend Node.js Backend engineers who want to understand performance bottlenecks Educators or mentors teaching how the Node.js runtime really works Anyone who wants to master async behavior and concurrency in Node.js