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Which of the following correctly represents the three states of a circuit breaker?

easy📝 Conceptual Q12 of 15
Microservices - Resilience Patterns
Which of the following correctly represents the three states of a circuit breaker?
ASTART, STOP, PAUSE
BACTIVE, INACTIVE, PENDING
CCLOSED, OPEN, HALF_OPEN
DON, OFF, WAIT
Step-by-Step Solution
Solution:

  1. Step 1: Recall circuit breaker states

    The circuit breaker has three states: CLOSED (normal), OPEN (blocking calls), HALF_OPEN (testing recovery).

  2. Step 2: Match states to options

    Only CLOSED, OPEN, HALF_OPEN lists these exact states.

  3. Final Answer:

    CLOSED, OPEN, HALF_OPEN -> Option C

  4. Quick Check:

    States = CLOSED, OPEN, HALF_OPEN [OK]
Quick Trick: Remember states as Closed, Open, Half-Open [OK]
Common Mistakes:
MISTAKES
  • Mixing up state names with unrelated terms
  • Using generic terms like ON/OFF
  • Forgetting the HALF_OPEN state

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