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Which component in distributed tracing is responsible for uniquely identifying a single request across services?

easy📝 Conceptual Q2 of 15
Microservices - Monitoring and Observability
Which component in distributed tracing is responsible for uniquely identifying a single request across services?
ASpan name
BTrace ID
CService name
DLog message
Step-by-Step Solution
Solution:

  1. Step 1: Define key tracing components

    A Trace ID uniquely identifies the entire request journey across multiple services, while spans represent individual operations.

  2. Step 2: Match component to unique request identification

    Trace ID is the unique identifier for the whole request, making Trace ID correct.

  3. Final Answer:

    Trace ID -> Option B

  4. Quick Check:

    Unique request ID = Trace ID [OK]
Quick Trick: Trace ID links all spans of one request [OK]
Common Mistakes:
MISTAKES
  • Confusing span name with unique request ID
  • Thinking service name identifies requests
  • Assuming log messages are unique IDs

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