Question

A CloudOps engineer manages a static website hosted in an S3 bucket and served through Amazon CloudFront with a default TTL of 86400 seconds. The web team just deployed updated HTML and CSS files to the S3 origin, but users continue to see the old versions of the pages when browsing the site. The team needs the updated files to be served to all users as quickly as possible without waiting for the TTL to expire. Which action should the engineer take?

Accepted Answer

Create a CloudFront invalidation specifying the paths of the changed files (or /*) to remove them from the edge caches.

Answer

Disable and re-enable the CloudFront distribution to force all edge locations to refresh their cached objects.

Answer

Enable S3 versioning on the origin bucket so CloudFront automatically fetches the newest object versions.

Answer

Lower the distribution's minimum TTL to 0 and wait for the change to propagate to all edge locations.