The Single Thread Model is at the core of how JavaScript works in browsers and —and understanding it is key for building performant, non-blocking apps. In this video, we break down how a single thread can handle thousands of requests using concepts like the call stack, event loop, event demultiplexer, and Libuv. You’ll learn how avoids blocking operations and achieves high concurrency, even with one thread! If you’ve ever wondered how asynchronous I/O works under the hood, this explainer is for you. Ideal for backend devs, learners, and curious engineers who want to level up their systems thinking. ⏳ Timestamps 00:00 Introduction – What Is a Single-Threaded Model? 00:37 Process vs Thread – Key Differences Explained 02:08 The Call Stack – Managing Function Execution 02:42 Blocking Operations & Main Thread Freeze 04:08 How Solves It – Event Loop & Non-Blocking I/O 05:10 Event Demultiplexer – Delegating I/O Like a Pro 06:10 Libuv & Background Threads – The Secret Sauce 07:04 in Action AWS Certification: AWS Certified Cloud Practioner: AWS Certified Solution Architect Associate: AWS Certified Solution Architect Professional: #nodejs #javascript #multithread #singlethread