Concurrent Requests in Node.js (Javascript) using Async/Await

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To make concurrent asynchronous requests in NodeJS (Javascript), we can take advantage of the setTimeout function and use it together with async/await, plus trusty old count.

What we are aiming for here is that 3 requests get sent asynchronously, but the promise they’re contained in only resolves when ALL 3 have returned. If it takes too long, we want to reject the promise, since the data has likely become stale.

Originally I tried using Promise.all(), but ran into problems with it. The following implementation worked MUCH better for me.

const makeRequest = () => {
  const p = new Promise((resolve, reject) => {
    setTimeout(() => resolve('hello'), 1000)  
  })
  p.catch(err => console.log(err))
  return p
}
const makeConcurrentRequests = endpoints => {
  const p = new Promise((resolve, reject) => {
    let results = []
    let count = 0
    setTimeout(async() => {
      results[0] = await makeRequest(endpoints[0])
      count++
      console.log('Result 1:', results[0])
    })
    setTimeout(async() => {
      results[1] = await…