Which of the following code snippets correctly implements a feature toggle to route requests during an incremental migration?

easy📝 Conceptual Q3 of 15

Microservices - Migration from Monolith

Aif (user.isAdmin) { routeToOldService(); } else { routeToNewService(); }

Bif (featureToggle.isEnabled('newService')) { routeToNewService(); } else { routeToOldService(); }

CrouteToNewService(); // no toggle check

Dif (featureToggle.isDisabled('newService')) { routeToNewService(); } else { routeToOldService(); }

Step-by-Step Solution

Solution:

Step 1: Understand feature toggles
Feature toggles enable conditional routing based on configuration flags.
Step 2: Analyze options
if (featureToggle.isEnabled('newService')) { routeToNewService(); } else { routeToOldService(); } correctly checks if the feature toggle is enabled to route traffic accordingly.
Final Answer:
if (featureToggle.isEnabled('newService')) { routeToNewService(); } else { routeToOldService(); } -> Option B
Quick Check:
Toggle enabled routes to new service [OK]

Quick Trick: Check toggle enabled before routing [OK]

Common Mistakes:

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