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- System Design Foundations
- Reliability and Operations
- Observability: logs, metrics, traces
Observability: logs, metrics, traces
Metrics tell you something is wrong, traces tell you where, logs tell you why. You need all three, and they need to share request ids.
- 8m
- Intermediate

Video by Tech Upskill · YouTube
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3 questions. Unlocks when you finish the video.
Overview
What this lesson covers
- Instrument the three signals and correlate them
- Alert on symptoms users feel, not on causes
- Trace a request across service boundaries
This lesson sits in Reliability and Operations, part of System Design Foundations. It assumes what came before it and leads directly into the next lesson in the module.
In this lesson you will:
- Instrument the three signals and correlate them
- Alert on symptoms users feel, not on causes
- Trace a request across service boundaries
Resources
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