Rate limited API consumption (FIFO)

rate_limited_api.js

const https = require('https')

const HOST = "";
const PATH = ""
const TOKEN = ""

const RATE_LMIT = 10;
const RATE_INTERVAL = 1000; //ms

const post = (phone, code) => new Promise((resolve, reject) => {
  const data = JSON.stringify({
      "recipient_type": "individual",
      "to": phone,
      "type": "text",
      "text": {
          "body": `Hello, your code is: ${code}`
      }
  });

  const options = {
    host: HOST,
    path: PATH,
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${TOKEN}`
    }
  }

  const req = https.request(options, res => {
    res.on('data', d => {
      resolve(res.statusCode);
    })
  })

  req.on('error', error => {
    reject(error);
  })

  req.write(data)
  req.end()
});

const queue = []

const consumer = () => {
  for (let i = 1; i<=RATE_LMIT; i++) {
    const request = queue.shift();
    if (request) {
      post(request.phone, request.code).then(console.log, console.error);
    }
  }
}

const orchestrator = (request) => {
  queue.push(request);
}

setInterval(consumer, RATE_INTERVAL);

for (let i=1; i<=100; i++) {
  orchestrator({phone:'123456', code:i});
}