Spring Boot - Advanced Patterns
You configured a circuit breaker but fallback method is never called on failure. What is the likely cause?
You configured a circuit breaker but fallback method is never called on failure. What is the likely cause?
medium📝 Debug Q6 of 15
Step-by-Step Solution
Solution:
Step 1: Check fallback method signature
Fallback method must have the same parameters plus an exception parameter to match the original method.Step 2: Effect of signature mismatch
If signatures differ, fallback is ignored and exceptions propagate without fallback.Final Answer:
Fallback method signature does not match the original method -> Option BQuick Check:
Fallback signature mismatch = fallback not called [OK]
Quick Trick: Fallback signature must match original method [OK]
Common Mistakes:
- Ignoring fallback method signature rules
- Assuming fallback triggers without failures
- Not enabling circuit breaker properly
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