A SysOps administrator manages a CloudFront distribution that serves dynamic and static content from an Application Load Balancer origin located in us-east-1. The distribution has edge locations serving global traffic. During traffic spikes, the origin ALB experiences a high volume of requests for the same objects because many regional edge caches independently forward cache misses to the origin. The team wants to reduce the number of duplicate requests reaching the origin without changing the application. Which CloudFront feature should the administrator enable?