ixmage leverages the reliability and ease of Amazon’s Content Delivery Network CloudFront.
Some advantages of a Content Delivery Network are:
The CDN will cache transformations for 30 days.
When an image is requested, it will either be served by CloudFront, or in case of a CDN miss (the request has not been cached) it will hit the ixmage service so the transformation is executed and then cached in the CDN for efficiency and speed.
In the case where your original images are updated, and the CDN needs to be invalidated, this can be accomplished from your account’s Control Panel.
Select Dashboard from the menu.
In the Dashboard view, go to the CDN tab.
Explore the log data to find the asset you want to invalidate. You can also use the search function.
Select the asset row, and you will see an Invalidate option.
At this point, you can choose the invalidation scope.
The CDN invalidates on matching the url path, and the options given allow you to pick the image, or any of its parent folders. This enables batch invalidation where you can invalidate an entire subfolder, or the whole alias.
When selecting the invalidation option, it will be added to a pending list so you can keep adding selections/urls and send them all as a group.
After sending the request, CloudFront will invalidate the assets within the next 10-15 seconds.