[Security and Compliance] A SysOps administrator manages the caching of an Amazon CloudFront distribution that serves pages of a website. The SysOps…

To allow the TTL (Time to Live) of individual pages to vary while adhering to the maximum and

minimum TTL settings configured for the Amazon CloudFront distribution, setting cache behaviors

directly at the origin is most effective:

Use Cache-Control Headers: By configuring the Cache-Control: max-age directive in the HTTP

headers of the objects served from the origin, you can specify how long an object should be cached

by CloudFront before it is considered stale.

Integration with CloudFront: When CloudFront receives a request for an object, it checks the cache-

control header to determine the TTL for that specific object. This allows individual objects to have

their own TTL settings, as long as they are within the globally set minimum and maximum TTL values

for the distribution.

Operational Efficiency: This method does not require any additional AWS services or modifications to

the distribution settings. It leverages HTTP standard practices, ensuring compatibility and ease of

management.

Implementing the TTL management through cache-control headers at the origin provides precise

control over caching behavior, aligning with varying content freshness requirements without

complex configurations.