How to execute n number of parallel requests using async?

Question

Node.js

Hello, how to execute the nth number of parallel requests using async, here is an example:

for (var i in data) {

          request({
            url: 'https://google.com',
            agentClass: Agent,
            agentOptions: {
              socksHost: data[i].host,
              socksPort: data[i].port
            }

          }, function(errChek, resChek) {

            if (!errChek) {

              data[i].status = true;
              
            } else {

              data[i].status = false;
              
            }
          })
        }

Answer 1

async.times
async.each

async.each(data, (row, cb) => {
  request({
    url: 'https://google.com',
    agentClass: Agent,
    agentOptions: {
      socksHost: row.host,
      socksPort: row.port
    }
  }, (errChek, resChek) => {
    row.status = !errChek;
    return cb(null, row);
  });
}, (err, results) => {
  // complete
});

Answer 2

await Promise.all(data.map(i => request(i)));

Answer 3

Either like this: Or like this:

const p1 = callSomeAsyncFunction(),
      p2 = callAnotherAsyncFunction(),
      p3 = callAnotherAsyncFunction();

await p1;
await p2;
await p3;

In the second example, we immediately launched three functions at the same time. Further, when they have already begun work, we expect the completion of all three functions. At the same time, since they are already running properly and performing the necessary actions, there will be no unnecessary delay, because they are already running.