Microservices - Resilience Patterns
How can you combine the circuit breaker pattern with a retry mechanism to improve system resilience without causing cascading failures?
How can you combine the circuit breaker pattern with a retry mechanism to improve system resilience without causing cascading failures?
hard📝 Trade-off Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand retry and circuit breaker interaction
Retries should happen only when the circuit breaker allows calls (CLOSED) to avoid overload.Step 2: Avoid retries during OPEN state to prevent cascading failures
Fail fast in OPEN state to protect the system from repeated retries.Final Answer:
Retry only when circuit breaker is CLOSED, fail fast when OPEN -> Option DQuick Check:
Retries with CLOSED state, fail fast on OPEN [OK]
Quick Trick: Retry only if circuit breaker is CLOSED to avoid overload [OK]
Common Mistakes:
MISTAKES- Retrying during OPEN state causing overload
- Disabling circuit breaker with retries
- Retrying blindly without state check
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