Google Professional Cloud Developer Question 39
Select 3Google Cloud PlatformYou are developing a high-traffic e-commerce application on Google Cloud, and you notice that frequent database queries for product details are causing performance bottlenecks. You decide to implement a caching solution to improve performance. Which of the following approaches would be appropriate for implementing an effective caching solution using Google Cloud services?
- A
Use Google Cloud Memorystore to cache frequently accessed product details.
- B
Store the product details in Firestore and rely on Firestore's strong consistency for faster reads.
- C
Implement a cache layer in your application using Redis hosted on Compute Engine.
- D
Use Cloud Storage to store product details and serve them as static files directly to users.
- E
Leverage a global CDN like Cloud CDN to cache API responses for product details.
Show answer and explanation
Correct answers: A, C, E
Explanation
Caching is a critical strategy for improving the performance of high-traffic applications. Google Cloud Memorystore and Redis on Compute Engine are examples of dedicated caching solutions that can store frequently accessed data in memory, reducing database load and improving response times. Cloud CDN, while not a traditional cache like Memorystore, can also serve as an effective caching mechanism for API responses, especially for static or infrequently changing data. Firestore and Cloud Storage, on the other hand, are not designed for use as caching solutions and would not address the performance bottlenecks caused by frequent database queries.
- A. Correct.
Correct: Google Cloud Memorystore (based on Redis or Memcached) is a managed caching solution suitable for storing frequently accessed data like product details. It reduces the need for repeated database queries and improves performance.
- B. Incorrect.
Incorrect: Firestore is a managed NoSQL database, and while it provides strong consistency and fast reads, it is not a caching solution. It would not alleviate the performance issues caused by frequent database queries.
- C. Correct.
Correct: Implementing a cache layer using Redis hosted on Compute Engine is a viable solution, though it requires more management effort compared to a managed service like Memorystore.
- D. Incorrect.
Incorrect: Cloud Storage is designed for storing and serving static files (e.g., images, videos) and is not optimized for dynamic data caching such as product details.
- E. Correct.
Correct: Cloud CDN can cache API responses globally, reducing latency for end users and offloading traffic from the backend. However, this works best for relatively static or infrequently changing API responses.