How can I fetch data concurrently in React?

How can I fetch data concurrently in React?

You can use the useEffect hook along with Promise.all to fetch multiple data sources concurrently.

Can you show me a code example?

Sure! Here's a simple example:

import React, { useEffect, useState } from 'react';

const MyComponent = () => {
  const [data, setData] = useState([]);

  useEffect(() => {
    const fetchData = async () => {
      const [response1, response2] = await Promise.all([
        fetch('https://api.example.com/data1'),
        fetch('https://api.example.com/data2')
      ]);
      const data1 = await response1.json();
      const data2 = await response2.json();
      setData([data1, data2]);
    };
    fetchData();
  }, []);

  return <div>{JSON.stringify(data)}</div>;
};

This will fetch both data sources at the same time.

What if one of the requests fails?

You can handle errors by using a try-catch block inside your async function. This way, you can manage the failure of one request without affecting the other.