How can I fetch data from multiple APIs efficiently?

How can I fetch data from multiple APIs efficiently?

You can use asynchronous programming to fetch data from multiple APIs simultaneously. Would you like an example?

Yes, please provide an example using JavaScript.

Sure! You can use Promise.all() to fetch data from multiple APIs like this:

const fetch = require('node-fetch');

async function fetchData() {
    const urls = ['https://api1.com/data', 'https://api2.com/data'];
    const responses = await Promise.all(urls.map(url => fetch(url)));
    const data = await Promise.all(responses.map(res => res.json()));
    return data;
}

What if one of the APIs fails?

If one API fails, Promise.all() will reject. You can handle this by using Promise.allSettled() to get results regardless of success or failure.