The Circuit Breaker pattern prevents an application from repeatedly trying to execute an operation that's likely to fail. It allows the application to continue without waiting for the fault to be fixed or wasting CPU cycles while it determines that the fault is persistent.
If the 'Recommendation Service' is down, the 'Frontend' stops calling it (Circuit Open) and just shows popular products from a cache instead of hanging for 30 seconds.
# Code Concept for Circuit Breaker Pattern\n# This pattern is architectural.\n\nclass Service:\n def execute(self):\n # Implementation logic\n pass