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Help with Authentication when proxying through CDN

See original GitHub issue


I recently wrote an article on using Airtable (Airtable.js + lambda) as a content backend.

A few people mentioned the 5 req/sec rate limit could be an issue, so I am trying to add additional details about how one could add a CDN (eg. Cloudfront) to cache the requests and avoid the rate limit.

I created airtable as the origin on cloudfront, and set it up to pass through Authorization headers. I am able to successful use the CDN to proxy/cache the calls

Request works as expected through curl:

$ curl -L "" \
    -H "authorization: Bearer keyOmitted"


[... truncated ]

Requests fail when using airtable.js

I then make the exact same request When I make the same call through airtable.js, but I get AUTHENTICATION_REQUIRED.

I logged the options variable right before airtable.js runs runAction and the payload looks good and matches my curl, so I really can’t understand why it would fail:

// run_action.js
# line 52
request(options, function(error, resp, body) {
[ ... ]


// `options`
      "authorization":"Bearer keyOMITTED",

Response with status 500 in 686 ms.
Error during invocation:  s {
  message: 'You should provide valid api key to perform this operation',
  statusCode: 401

I apologize as this may not be an issue with the lib but I am out of ideas here. Let me know if you have any insights, otherwise feel free to close it.

Here is section I am adding to the article - I would be happy to add a wiki page or doc so other users can use the same approach to cache the rate limit:

Article Update:

image image

Issue Analytics

  • State:closed
  • Created 4 years ago
  • Comments:10 (8 by maintainers)

github_iconTop GitHub Comments

gtalaricocommented, Jul 4, 2019

After some more tests and tweaking CDN settings I was able to get it to work. I am not 100% what the change was that fixed it, but I will post the setting here as a reference.

Thank you @EvanHahn and @syrnick for you help troubleshooting this.

Distribution Config


Behaviour Config


Origin Config


Netlify Lambda Code

const Airtable = require('airtable')

  endpointUrl: process.env.AIRTABLE_API_URL,
  apiKey: process.env.AIRTABLE_API_KEY
const base = Airtable.base('appNtnZ99fkL1cByn')

exports.handler = function(event, context, callback) {
  const allRecords = []
      maxRecords: 100,
      view: 'all'
      function page(records, fetchNextPage) {
        records.forEach(function(record) {
      function done(err) {
        if (err) {
        } else {
          const body = JSON.stringify({ records: allRecords })
          const response = {
            statusCode: 200,
            body: body,
            headers: {
              'content-type': 'application/json',
              'cache-control': 'Cache-Control: max-age=300, public'
          callback(null, response)

ricricucitcommented, May 23, 2020

ah! magic for me, as well. It started working after some time, and after invalidating all objects.

Not sure, but I think it was only cloudfront needing some time to go up, properly. 🤔

Read more comments on GitHub >

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