Node.js is not entirely based on a single-thread. While the main execution of JavaScript code in a Node.js application occurs on a single thread (the main thread), Node.js is capable of performing I/O operations asynchronously and can utilize multiple threads in the background.
The confusion often arises from the fact that Node.js uses an event-driven, non-blocking I/O model, which allows it to handle many operations on the main thread without waiting for I/O operations to complete. This is achieved through the event loop, which is a mechanism that enables Node.js to execute non-blocking operations and to offload operations that would block the thread to the system kernel whenever possible[1][2].
However, Node.js also provides the worker_threads module, which allows developers to spawn additional threads and perform JavaScript operations in parallel. This is particularly useful for CPU-intensive tasks that would otherwise block the main thread. Each ...
