03.01 JS Node. Make parallel HTTP requests

You can make parallel HTTP requests using JS node.

/*
* This code is structured to handle multiple HTTP GET requests concurrently, 
* using axios to perform the requests and Promise.all to manage them simultaneously. 
*/

// Importing the axios library for making HTTP requests
import axios from "axios";

export default async function run({ execution_id, input, data }) {
  // Defining an array of URLs to make HTTP requests to
  const urls = ['https://dummyjson.com/carts', 'https://dummyjson.com/users', 'https://dummyjson.com/quotes'];

  try {
    // Using Promise.all to perform simultaneous HTTP requests to the URLs defined above
    // The map function applies 'httpRequest' to each URL in the 'urls' array
    const results = await Promise.all(urls.map(url => httpRequest(url)));
    
    // Returning the results of the HTTP requests
    // This is where you can handle the results as needed in your application
    return {
      res: results
    };
  } catch (error) {
    // Logging any errors to the console
    console.error(error);
    // Rethrowing the error to be handled by the caller of this function
    throw error; 
  }

  // Defining an asynchronous function 'httpRequest' to handle individual HTTP requests
  async function httpRequest(rawURL) {
    try {
      // Making a GET request to the provided URL using axios
      const response = await axios({
        method: "GET",
        url: rawURL
      });
      // Returning the data part of the response
      // This can be modified according to the needs of the application
      return response.data; 
    } catch (error) {
      // Logging any errors encountered during the HTTP request
      console.error(error);
      // Rethrowing the error to be handled by the caller of 'httpRequest'
      throw error; 
    }
  }
}