Why should I understand libuv as a Node.js developer?
Because it helps you understand why Node.js is non-blocking, what the thread pool does, and why heavy synchronous code blocks the event loop. These are core Node.js concepts that come up in every backend interview.
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More FAQs in What Is libuv in Node.js and Why Does It Matter?
A C library originally created for Node.js that provides cross-platform async I/O. It handles the event loop, file system operations, network operations, a thread pool for blocking work, and timers. Without libuv, Node.js would not be non-blocking.
Because V8 runs JavaScript but does not handle I/O. libuv fills that gap by providing async file, network, and process operations. It is the bridge between JavaScript execution and the underlying operating system's I/O capabilities.
The event loop, async file system operations, async network operations, a thread pool for blocking work, and timers. These are the core capabilities that make Node.js non-blocking and efficient for concurrent I/O.
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