PROFESSIONAL-CLOUD-DEVOPS-ENGINEER · Question #210
PROFESSIONAL-CLOUD-DEVOPS-ENGINEER Question #210: Real Exam Question with Answer & Explanation
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Question
You manage a microservice that provides a public-facing API (Service A). Service A is time- critical and has a response SLO of 500 ms. Service A makes synchronous calls to internal API (Service B) that is known to become unreliable under heavy load, resulting in connection timeout errors or 500 errors. Service B is used to collect request information for the transactions processed by Service A. You need to mitigate the impact of Service B issues on your Service A users. What should you do?
Options
- AIncrease the size of the queue in front of the thread pool used by Service A instances.
- BImplement retry logic with exponential back-offs when calling Service B.
- CImplement a circuit breaker to store the request data in a database.
- DImplement rate limiting in Service A to limit the number of requests to Service B.
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