What is the Node.js event loop?

Can you explain what the Node.js event loop is?

Sure! The Node.js event loop is a mechanism that allows Node.js to perform non-blocking I/O operations, despite being single-threaded.

How does the event loop handle asynchronous operations?

The event loop uses a callback queue to manage asynchronous operations. When an async task completes, its callback is pushed to the queue.

What are the phases of the event loop?

The event loop has several phases: timers, I/O callbacks, idle, poll, check, and close callbacks, each serving a specific purpose.

Can you give an example of how the event loop works in practice?

Certainly! For instance, when you make a database query, Node.js can continue executing other code while waiting for the query to complete.