How do I change my CloudFront configurations so that certain files aren't cached?

2 minute read

I want Amazon CloudFront to pass certain files through and not cache the files at edge locations.


Configuration on the origin

Note: If you use legacy cache settings, then update your CloudFront distribution's cache behavior to set object caching as Use Origin Cache Headers. If you use a cache policy, then CloudFront considers the origin Cache-Control settings by default.

On your custom origin web server application, add Cache-Control no-cache, no-store, or private directives to the objects that you don't want CloudFront to cache. Or, add the Expires directive to the objects that you don't want CloudFront to cache.

For Amazon Simple Storage Service (Amazon S3) origins, use object metadata to add the Cache-Control no-store directive to objects that you don't want CloudFront to cache. If you can't add object metadata to each object, then use the Lambda@Edge function for the Origin response trigger. The Lambda@Edge function lets you update the value of the Cache-Control header based on the value of content-type header or other response parameters.

Configuration on the distribution

To edit the configuration on the distribution, complete the following steps:

  1. Open the CloudFront console.
  2. Choose the distribution that you want to modify.
  3. Choose the Behaviors tab.
  4. If you already have a cache behavior for the objects that you don't want CloudFront to cache, then select the cache behavior and choose Edit. To create a new cache behavior, choose Create Behavior.
  5. For Cache and origin request settings, select Cache policy and origin request policy (recommended).
  6. For Cache policy, select Managed - CachingDisabled.
  7. Choose Save changes.
    Note: If you don't use an Amazon S3 bucket as your origin, then set a specific cache behavior to forward all headers to the origin. Update the cache behavior, and then set Cache Based on Selected Request Headers to All.

Related information

Specifying the amount of time that CloudFront caches objects

Adding, removing, or replacing content that CloudFront distributes

AWS OFFICIALUpdated a month ago