The answer
Yes. CPU-heavy operations can block the Event Loop. Node.js provides Worker Threads, Child Processes, and Clustering to handle such workloads.
Why Is Node.js Single-Threaded?
Can CPU-intensive tasks affect Node.js performance?
More FAQs in Why Is Node.js Single-Threaded?
Node.js uses a single-threaded JavaScript execution model to simplify programming and efficiently handle I/O-heavy workloads using non-blocking operations.
Node.js delegates asynchronous operations to the operating system and libuv while the Event Loop coordinates completed tasks, allowing many concurrent requests to be handled efficiently.
JavaScript execution is single-threaded, but Node.js uses additional threads internally through libuv's thread pool for tasks such as file operations, DNS lookups, and cryptographic functions.
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