Under the Hood of Asynchronous Execution
Learn how Node.js manages asynchronous tasks under the hood by exploring its call stack, libuv library, callback queues, and event loop phases. Understand non-blocking execution and the flow of functions like setTimeout to build efficient backend applications.
We'll cover the following...
In previous lessons, we introduced asynchronous programming. Now, we’ll go under the hood to see how Node.js handles asynchronous tasks with the event loop, libuv, and the callback queue. Understanding these components helps us write efficient, non-blocking code.
Core components of asynchronous execution
When Node.js runs a file with both synchronous and asynchronous code, it coordinates execution using the following four components:
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Call stack: The primary space where JavaScript code runs, handling synchronous tasks—such as variable ...