The answer
process.nextTick() executes before the Event Loop continues, while setImmediate() executes during the Check Phase of the Event Loop.
Difference Between process.nextTick() and setImmediate() in Node.js
What is the main difference between process.nextTick() and setImmediate()?
More FAQs in Difference Between process.nextTick() and setImmediate() in Node.js
process.nextTick() executes first because Node.js processes the nextTick queue before Event Loop phases.
No. It uses a separate queue that is processed before the Event Loop continues.
Use setImmediate() when you want to defer execution until the Event Loop reaches the Check Phase, especially after I/O operations.
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