Can you explain the Node.js event loop and how it works?

Can you explain the Node.js event loop and how it works?

Sure! The Node.js event loop is a mechanism that allows Node.js to perform non-blocking I/O operations. It uses an event-driven architecture to handle multiple operations concurrently.

How does the event loop handle asynchronous callbacks?

The event loop processes asynchronous callbacks by placing them in a queue. When the call stack is empty, the event loop picks the first callback from the queue and executes it.

Can you visualize how the event loop works?

Absolutely! Imagine the event loop as a circle where tasks are processed. When a task is completed, its callback is added to the queue, and the loop continues to check for new tasks.

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 phase has a specific purpose in managing tasks.