PROFESSIONAL-CLOUD-ARCHITECT Question #28: Real Exam Question with Answer & Explanation

Question

You need to reduce the number of unplanned rollbacks of erroneous production deployments in your company's web hosting platform. Improvement to the QA/Test processes accomplished an 80% reduction. Which additional two approaches can you take to further reduce the rollbacks? Choose 2 answers

Options

• AIntroduce a green-blue deployment model.
• BReplace the QA environment with canary releases.
• CFragment the monolithic platform into microservices.
• DReduce the platform's dependency on relational database systems.
• EReplace the platform's relational database systems with a NoSQL database.

Explanation

Blue green deployment is an application release model that gradually transfers user traffic from a previous version of an app or microservice to a nearly identical new release-both of which are running in production. In software, a canary process is usually the first instance that receives live production traffic about a new configuration update, either a binary or configuration rollout. The new release only goes to the canary at first. The fact that the canary handles real user traffic is key: if it breaks, real users get affected, so canarying should be the first step in your deployment process, as opposed to the last step in testing in production. While both green-blue and canary releases are useful

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