After you upload an updated version of an existing file to App Services Hosting, your changes may not be visible immediately. This is because App Services serves hosted files through a Content Delivery Network (CDN) with a cached copy of the file.

CDN caching is used to decrease the latency for end users retrieving your content, but this can prevent them from receiving the most up-to-date version. To resolve this issue, you can manually flush the CDN cache.

In addition, you can configure the caching behavior for an individual file by adding a Cache-Control attribute to the file.