[Solved] Which code snippet correctly shows a fallback for a microservice call to handle failure gracefully? — Ans: try { return callService(); } catch { return fallbackResponse(); } | Microservices

Microservices - Resilience Patterns

Which code snippet correctly shows a fallback for a microservice call to handle failure gracefully?

AcallService() && fallbackResponse()

Bif (callService()) { throw error; } else { fallbackResponse(); }

Ctry { return callService(); } catch { return fallbackResponse(); }

Dreturn callService() + fallbackResponse();

Step-by-Step Solution

Solution:

Step 1: Understand fallback implementation
A fallback is used when the main call fails, typically handled with try-catch.
Step 2: Analyze each snippet
try { return callService(); } catch { return fallbackResponse(); } uses try-catch to return fallback on failure, which is correct. Others misuse logic or syntax.
Final Answer:
try { return callService(); } catch { return fallbackResponse(); } -> Option C
Quick Check:
Try-catch fallback = Correct fallback pattern [OK]

Quick Trick: Use try-catch to provide fallback on failure [OK]

Common Mistakes:

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Which code snippet correctly shows a fallback for a microservice call to handle failure gracefully?