[Solved] This code snippet tries to implement a fallback but has a bug: def get_data(): try: return call_service() except: call_fallback() What is the bug here? | Microservices

Microservices - Resilience Patterns

This code snippet tries to implement a fallback but has a bug:

def get_data():
    try:
        return call_service()
    except:
        call_fallback()

What is the bug here?

AThe code does not catch exceptions

BThe try block does not call the service

CThe except block should raise an error

DThe fallback function is not returned

Step-by-Step Solution

Solution:

Step 1: Check try-except behavior
The try block returns the service call result, but except calls fallback without returning it.
Step 2: Identify missing return
Without returning fallback's result, the function returns None on failure instead of fallback data.
Final Answer:
The fallback function is not returned -> Option D
Quick Check:
Missing return in except causes None [OK]

Quick Trick: Always return fallback result in except block [OK]

Common Mistakes:

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This code snippet tries to implement a fallback but has a bug: