Having trouble accessing the latest version of the ReactJS single page application in Chrome

Our application is built on ReactJS and deployed using S3 and CloudFront. We are experiencing an issue where clients often need to perform a hard refresh of the web app to access the latest Single Page Application (SPA).

In order to address this problem, I came across an article that suggested a solution:

Append reload notice on create-react-app & registerServiceWorker.js

The method described in the article triggers an event called 'newContentAvailable' in Firefox, Chrome, and Safari browsers. When this event occurs, the code attempts to reload the updated version with window.location.reload(true). While this successfully updates Firefox and Safari, Chrome still displays the older version.

I have tried various approaches to reloading in Chrome without success. During my search for a solution, I found the following code snippet:

$.ajax({
    url: window.location.href,
    headers: {
        "Pragma": "no-cache",
        "Expires": -1,
        "Cache-Control": "no-cache"
    }
}).done(function () {
    window.location.reload(true);
});

I am uncertain about what mistake I might be making here. Any assistance would be greatly appreciated.

Answer №1

There are a variety of files that need to be deployed:

  • Basic files like index.html should not be cached by browsers
  • Build files with unique hash keys, for example 18.a7e57db0.chunk.js, can safely be cached as changes in the source will result in new build files

To manage caching HTTP headers, tools like AWS S3 CLI or other API tools such as python boto3 can be utilized. In general, you would prefer the browser to reload basic files on each call for them, while minimizing unnecessary traffic for files that remain unchanged (i.e. those with hash keys).

I have developed a Python program that automates this process during upload to S3. It configures HTTP cache header parameters based on file type, removes outdated files, and optionally manages older versions.

For further information, check out: Steps to deploy a React app on S3 with CloudFront while managing caching?

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