Correlation IDs help trace requests across multiple services.
In distributed systems, Correlation IDs are unique identifiers assigned to each request at the API Edge router. They are propagated through all service interactions, allowing for tracking the request lifecycle. This is crucial for diagnosing issues in a distributed setup. For instance, in an e-commerce application, if a request to checkout fails, the Correlation ID can help trace the issue across payment, inventory, and shipping services.
Additional Notes
Why does Correlation IDs in distributed systems matter in this design?