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QuestionQ217

Integrating applications with Google Cloud services

You are using the Cloud Client Library to upload an image from your application to Cloud Storage. Application users report that the upload occasionally fails to finish and that the client library returns an HTTP 504 Gateway Timeout error. You want to make the application more resilient to errors. What changes should you make to the application?

  • A Write an exponential backoff process around the client library call.
  • B Write a one-second wait time backoff process around the client library call.
  • C Design a retry button in the application and ask users to click if the error occurs.
  • D Create a queue for the object and inform the users that the application will try again in 10 minutes.
Explanation

Cloud Storage identifies HTTP 504 Gateway Timeout as a transient failure that should be retried using truncated exponential backoff. Increasing the delay between retries helps prevent retry traffic from compounding a temporary service problem.

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