What is the main difference between setTimeout() and setImmediate()?
setTimeout() executes in the Timers Phase, while setImmediate() executes in the Check Phase of the Event Loop.
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More FAQs in Difference Between setTimeout() and setImmediate() in Node.js
The order is not always guaranteed. It depends on the Event Loop state and execution context.
No. It schedules the callback for the Timers Phase after at least the specified delay.
Use setImmediate() when you want to defer execution until the Check Phase, especially after I/O operations.
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