In a distributed system, you implement retry with exponential backoff combined with circuit breaker. What is the main advantage of this combination?

hard📝 Trade-off Q9 of 15

Microservices - Resilience Patterns

AIt allows unlimited retries without delay

BIt prevents retries when the service is known to be down, saving resources

CIt removes the need for exponential backoff delays

DIt guarantees all retries will succeed eventually

Step-by-Step Solution

Solution:

Step 1: Understand circuit breaker role
Circuit breaker stops calls to a failing service to prevent overload.
Step 2: Combine with exponential backoff
Exponential backoff spaces retries; circuit breaker prevents retries when failure is persistent.
Final Answer:
It prevents retries when the service is known to be down, saving resources -> Option B
Quick Check:
Circuit breaker + backoff = efficient retry control [OK]

Quick Trick: Circuit breaker stops retries during persistent failure [OK]

Common Mistakes:

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