Google Professional Cloud Developer Question 303
Select 3Google Cloud PlatformYour team is preparing to release a new feature for a cloud-based application that serves global users. To ensure minimal disruption and a smooth user experience, you decide to adopt a feature rollout strategy. Which strategy or strategies would be most appropriate to achieve this goal?
- A
Use a canary deployment to release the feature to a small percentage of users and monitor its performance before a full rollout.
- B
Perform a blue/green deployment to switch all users to the new feature version immediately after testing.
- C
Roll out the feature to all users simultaneously without monitoring, to minimize development time.
- D
Leverage a phased rollout to gradually introduce the feature to users in different regions or groups.
- E
Implement feature flags to enable or disable the feature for specific users or groups dynamically.
Show answer and explanation
Correct answers: A, D, E
Explanation
The combination of canary deployment, phased rollout, and feature flags provides a robust approach to adopting feature rollout strategies. Canary deployment ensures the feature is tested with minimal impact, phased rollout helps control exposure across regions or groups, and feature flags offer dynamic control over the feature's availability. These strategies collectively minimize disruption and enhance the user experience during a global feature rollout.
- A. Correct.
Canary deployment is a suitable strategy as it allows gradual exposure of the feature to a small group of users, helping to detect potential issues early and limit the impact.
- B. Incorrect.
While blue/green deployment ensures a smooth transition between versions, it typically involves switching all users to the new version at once, which doesn't align with minimizing disruption for global users.
- C. Incorrect.
Simultaneous rollout without monitoring increases the risk of introducing issues to all users and is not a best practice for critical applications.
- D. Correct.
Phased rollout is appropriate for gradual feature introduction, especially when targeting users in specific regions or groups, reducing the risk of widespread issues.
- E. Correct.
Feature flags provide flexibility to enable or disable the feature dynamically for specific users or groups, which is ideal for testing and addressing potential issues promptly.