Question 1

What is setImmediate() in Node.js?

Accepted Answer

setImmediate() schedules a callback to execute during the Check Phase of the Event Loop.

Question 2

When does setImmediate() execute?

Accepted Answer

It executes after the Poll Phase when the Event Loop enters the Check Phase.

Question 3

Is setImmediate() the same as setTimeout(fn, 0)?

Accepted Answer

No. setTimeout executes in the Timers Phase, while setImmediate executes in the Check Phase.

Question 4

Why is setImmediate() useful?

Accepted Answer

It allows developers to defer work and schedule callbacks after I/O operations complete.

What is setImmediate() in Node.js?

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