Exam CAS-005 topic 1 question 37 discussion

Why the other options are less optimal on their own: A. Horizontal scalability: Helps handle more traffic, but without caching, the load on the database remains high, especially for static content. B. Vertical scalability: Limited benefits, and scaling up a server won't fix inefficient use of resources (e.g., querying static data repeatedly). C. Containerization: Useful for deployment and isolation, but doesn't solve performance issues related to database access. D. Static code analysis: Relevant to security and code quality, not performance during runtime.

The performance issue is occurring on entry pages that contain static sponsor-related content which is pulled from a database. This is a classic use case for caching, which can significantly reduce database load and response times by storing frequently accessed data closer to the user or application. ✅ Caching would: Store the static sponsor content either in memory (e.g., Redis, Memcached) or at the edge (e.g., CDN). Reduce the number of repeated database queries for the same static data. Improve response times and scalability under heavy user loads.