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Exam Professional Cloud Developer topic 1 question 287 discussion

Actual exam question from Google's Professional Cloud Developer
Question #: 287
Topic #: 1
[All Professional Cloud Developer Questions]

You maintain a popular mobile game deployed on Google Cloud services that include Firebase, Firestore, and Cloud Functions. Recently, the game experienced a surge in usage, and the application encountered HTTP 429 RESOURCE_EXHAUSTED errors when accessing the Firestore API. The application has now stabilized. You want to quickly fix this issue because your company has a marketing campaign next week and you expect another surge in usage. What should you do?

  • A. Request a quota increase, and modify the application code to retry the Firestore API call with fixed backoff.
  • B. Request a quota increase, and modify the application code to retry the Firestore API call with exponential backoff.
  • C. Optimize database queries to reduce read/write operations, and modify the application code to retry the Firestore API call with fixed backoff.
  • D. Optimize database queries to reduce read/write operations, and modify the application code to retry the Firestore API call with exponential backoff.
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Suggested Answer: D 🗳️
by anshad666 at Oct. 12, 2024, 4:33 a.m.

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anshad666
1 month, 1 week ago
Selected Answer: D
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.
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