Microservices - Resilience Patterns
A microservice uses a circuit breaker to prevent cascading failures. The circuit breaker is set to open after 5 failures but it opens after only 2 failures. What is the likely cause?
A microservice uses a circuit breaker to prevent cascading failures. The circuit breaker is set to open after 5 failures but it opens after only 2 failures. What is the likely cause?
medium📝 Analysis Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Understand circuit breaker failure threshold
The circuit breaker opens after a configured number of failures to stop calls temporarily.Step 2: Analyze early opening
If it opens after 2 failures instead of 5, the threshold setting is likely wrong or misread.Final Answer:
The failure count threshold is incorrectly configured -> Option AQuick Check:
Early circuit breaker open = A [OK]
Quick Trick: Check config values when behavior differs from expectations [OK]
Common Mistakes:
MISTAKES- Assuming circuit breaker ignores failures
- Thinking service is healthy when breaker opens
- Believing circuit breaker is disabled if it opens
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