使用Node.js发送大量SMS时的Twilio API和指数退避

问题描述

我正在开发一个批量SMS应用程序，该应用程序将在紧急情况下向一群人发送一条消息。我已经查看了How do I enable PUT requests in Azure?并实现了他们的代码，这时我从API中收到429错误。因此，我添加了指数补偿代码来防止这种情况，但是当我运行脚本时，它只是发送到数组中列出的第二个数字。

const accountSid = '[ACCOUNT SID]';
const authToken = '[AUTH TOKEN]';
const client = require('twilio')(accountSid,authToken);

var numbersToMessage = ["+1800XXXXXXX","+1888XXXXXXX"]

numbersToMessage.forEach(function(number){
  var message = client.messages.create({
    body: 'This is test #2 from August 21,2020.',from: '[TWILIO SENDER NUMBER]',statusCallback: '[PIPEDREAM API URL]',to: number
  })
  .then(message => console.log(message.status))
  return((err) => {
  // assumes that the error is "request made too soon"
  backoffTime *= 2;
  i--;
  console.log(err);
  return delay(backoffTime);
});
  done();
});

指数补偿对我来说是全新的，因此我可以确定这就是问题所在，但就我所知。我也尝试过使用npm软件包Twilio Docs，但没有任何运气。

解决方法

请注意，这不是“指数退避”，但它应该可以处理约100个数字。

用您的Twilio凭据替换，将数字添加到数组，替换PIPEDREAM_API_URL。您的所有100条消息应在大约30秒内在Twilio排队。

Twilio的响应message.sid表示消息已添加到发送队列中，而不是消息已实际发送。

const accountSid = 'AC...';
const authToken = '4f...';
const client = require('twilio')(accountSid,authToken);

const TWILIO_SENDER_NUMBER = '+1...';
const TEXT_TO_SEND = 'This is test #2 from August 21,2020.';
const PIPEDREAM_API_URL = '...';

// about 100 numbers
let numbersToMessage = [
    "+1...","+1...",// "+1...",];

function sendAllMessagesWithTwilio(data) {

    // stop condition,nothing left in the array of numbers
    if (data.length === 0) {
        console.log('............... DONE');
        return;
    }

    // take the first number from the array of numbers
    let _number = data.shift();
    console.log(_number);

    client.messages
        .create({
            to: _number,from: TWILIO_SENDER_NUMBER,body: TEXT_TO_SEND,statusCallback: PIPEDREAM_API_URL
        })
        .then((message) => {
            // after Twilio responds,send the next message
            console.log(`${message.sid}`);
            // recursive call of function,pass the remaining numbers as argument
            // use setTimeout() to slow down,300 milliseconds between requests
            setTimeout(sendAllMessagesWithTwilio.bind(null,data),300);
        })
        .catch((err) => {
            // if an error is sent back from Twilio
            console.error(err);
        });

}

// first call of recursive function
// takes the initial array of numbers as argument
console.log('BEGIN ...............')
sendAllMessagesWithTwilio(numbersToMessage);

祝好运！

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