The Single Thread Model is at the core of how JavaScript works in browsers and Node.js—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 Node.js 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, Node.js learners, and curious engineers who want to level up their systems thinking.
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⏳ 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 Node.js 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 Node.js in Action
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#nodejs #javascript #multithread #singlethread