How can I improve the performance of my Node.js application using async features?

How can I improve the performance of my Node.js application using async features?

You can enhance performance by using async/await for non-blocking operations, which allows your app to handle more requests concurrently.

Can you give me an example of using async/await in a Node.js app?

Sure! Here's a simple example:

const fs = require('fs').promises;

async function readFile() {
    try {
        const data = await fs.readFile('file.txt', 'utf8');
        console.log(data);
    } catch (error) {
        console.error('Error reading file:', error);
    }
}
readFile();

What about using Promises? Is that still relevant?

Yes, Promises are still relevant! They provide a way to handle asynchronous operations and can be used with async/await for cleaner code.

Are there any performance pitfalls I should be aware of?

Absolutely! Be cautious of excessive parallelism, as it can lead to resource exhaustion. Also, avoid blocking the event loop with synchronous code.