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Cloud & SRE

Observability

A system running in production is a black box until you instrument it. Logs, metrics, and traces are how you see inside it, and alerting and SLOs are how you decide when to act.

Prerequisite: CI/CD Pipelines

What you'll actually learn

A running production system is a black box by default — you can't see inside it, you can only see what it chooses to expose. This track builds that visibility on purpose: instrumenting a real service with logs, metrics, and traces, then using alerting and SLOs to decide which of the signals you're now collecting actually deserve to wake someone up at 3am and which are just noise.

What you'll be able to do

You'll take a service that's "acting weird" with no clear symptom and use its logs, metrics, and traces together to find the actual root cause, instead of guessing and restarting things until it goes away. That's the real job behind the word "observability" — not collecting data, but being able to answer "why is this happening" fast enough for it to matter.

Syllabus

1You Cannot Fix What You Cannot Seecore~10 min
2The Three Pillars: Logs, Metrics, Tracescore~10 min
3Structured Loggingcore~12 min
4Metrics in Practice: The USE and RED Methodsadvanced~12 min
5Distributed Tracing in Depthadvanced~15 min
6Alerting and the Danger of Alert Fatigueadvanced~12 min
7SLIs, SLOs, and Error Budgetsadvanced~15 min
8Synthesis: Instrumenting a Real Systemadvanced~15 min

Frequently asked

How long does Observability take to complete?

Roughly 2 hours across 8 hands-on quests — you can go at your own pace and pick up exactly where you left off.

What do I need to know before starting Observability?

You should be comfortable with CI/CD Pipelines first — the skill tree unlocks Observability once you've cleared those.

Is Observability free to learn?

Yes — Observability is fully available on the free tier, starting with a free first quest and no payment method required to sign up. Plus and Elite remove pacing limits but don't gate any of the Observability curriculum behind a paywall.

Start this skill for free

Create a free account and begin your first quest — no card required.

Start free