Exam Professional Cloud Developer topic 1 question 287 discussion

Exponential backoff is the best practice, so we can rule out A and C. D is probably the correct answer, but B seems plausible. The question states, "You want to quickly fix this issue because your company has a marketing campaign next week and you expect another surge in usage." You have to consider which option you can accomplish in such a short timeframe: do you request a quota increase (and hope to obtain it quickly), or rush to optimize your DB queries in a way that will have meaningful impact? Feels like a pretty close call to me, and in a real-world situation this is not so black and white.

"You want to quickly fix" -> B. Since this is an urgent issue, I think that requesting a quota increase (B) should be prioritized. However, I think that optimizing the query (D) should be done in parallel as a long-term performance improvement.

Optimizing database queries: Reducing the number of read/write operations can prevent resource exhaustion and help Firestore handle higher traffic more efficiently. Exponential backoff: This is a best practice when handling rate-limited or resource-exhausted errors (like HTTP 429). It gradually increases the delay between retry attempts, reducing the load on the system and giving it time to recover.