You have a number of large PDF files stored in an RDS instance used by a company’s
geographically distributed user base. These PDFs are accessed infrequently, but when they are accessed, they need to respond quickly to requests. As the company’s user base has increased, the load is beginning to overwhelm the database. What is the best option for improving database performance?
A. Set up a CloudFront distribution.
B. Create read replicas across the regions in which the user base accesses the application.
C. Consider installing a storage gateway with stored volumes at the customer’s on- premises site.
D. Install ElastiCache in front of the database.
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