Multi Step Processes easy
A user reports an error in a process that spans 3 different microservices. The logs are scattered across different servers. What is the standard way to link these logs together?
- A Search for the exact timestamp in all files.
- B Pass a unique 'Correlation ID' or 'Trace ID' through every service call.
- C Grep for the error message 'Exception'.
- D Log the user's password in every step.
Answer: B. Pass a unique 'Correlation ID' or 'Trace ID' through every service call.
A Correlation ID is generated at the entry point and passed in headers to downstream services. This allows engineers to query `trace_id=abc` and see the entire lifecycle of that specific request across the system.
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