Inside the Node.js Event Loop: A Deep Dive

Node.js employs a single-threaded, event-driven model for high concurrency and asynchronous I/O. It processes non-I/O tasks in the main thread and delegates I/O tasks to a thread pool. This approach enables efficient handling of multiple requests without thread-related overhead. The Event Loop continuously processes events, making Node.js ideal for I/O-intensive tasks like APIs and chat services. However, CPU-intensive tasks can block the event queue, limiting Node.js's effectiveness in such scenarios.