What are the timing features of Node.js?

Question

Accepted Answer

The Timers module in Node.js contains functions that execute code after a set period of time.

* **setTimeout/clearTimeout** - can be used to schedule code execution after a designated amount of milliseconds
* **setInterval/clearInterval** - can be used to execute a block of code multiple times
* **setImmediate/clearImmediate** - will execute code at the end of the current event loop cycle
* **process.nextTick** - used to schedule a callback function to be invoked in the next iteration of the Event Loop

```js
function cb(){
  console.log('Processed in next iteration');
}
process.nextTick(cb);
console.log('Processed in the first iteration');
```

Output:

```js
Processed in the first iteration
Processed in next iteration
```

## Итог

Key takeaway for interview: What are the timing features of Node.js?