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Why is it important to have all three pillars (metrics, logs, traces) in a microservices monitoring strategy?

hard📝 Conceptual Q10 of 15
Microservices - Monitoring and Observability
Why is it important to have all three pillars (metrics, logs, traces) in a microservices monitoring strategy?
ABecause logs are enough to understand request flows
BBecause metrics alone can show all system issues
CBecause traces replace the need for metrics and logs
DBecause each pillar provides unique insights that complement each other
Step-by-Step Solution
Solution:

  1. Step 1: Understand the role of each pillar

    Metrics provide numerical health data, logs give detailed event info, and traces show request paths.

  2. Step 2: Recognize their complementary nature

    Each pillar fills gaps left by others, making combined use essential for full observability.

  3. Final Answer:

    Because each pillar provides unique insights that complement each other -> Option D

  4. Quick Check:

    All pillars needed for full insight [OK]
Quick Trick: All three pillars together give full system visibility [OK]
Common Mistakes:
MISTAKES
  • Relying on only one pillar
  • Thinking logs show everything
  • Assuming traces replace other pillars

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