Tutorials Cloud Computing Tutorial
Tracing — Complete Guide
Tracing — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of Cloud Computing Tutorial on Toolliyo Academy.
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Cloud Computing Tutorial · Lesson 68 of 100
Tracing
Foundations ✓ → Platform ✓ → Ops → Projects
Ops · 3 — DevOps, security, scale · ~10 min · Cloud — Security & Observability
What is this?
Distributed tracing follows requests across services with spans linked by trace IDs.
Why should you care?
CloudVerse microservices need traces to debug slow checkout spanning six calls.
See it live — copy this example
Use AWS/Azure/GCP free tier or local Docker/Kind. Sketches and YAML are meant to be typed and adapted.
# OpenTelemetry env (CloudVerse API pod)
env:
- name: OTEL_SERVICE_NAME
value: payments-api
- name: OTEL_EXPORTER_OTLP_ENDPOINT
value: http://otel-collector.observability:4317
- name: OTEL_TRACES_SAMPLER
value: parentbased_traceidratio
- name: OTEL_TRACES_SAMPLER_ARG
value: "0.1"What happened?
- Each hop creates a span.
- Sampling controls cost; always sample errors in prod policies.
Practice next
- Instrument one HTTP client call.
- Deploy OTel collector.
- View trace in Jaeger or App Insights.
- Propagate traceparent on Service Bus messages.
- Add custom span for fraud check.
Remember
Trace ID across services. Spans show bottlenecks. Sample wisely.
CloudVerse slow checkout
Cart timeout with no single service error.
Outcome: Trace shows inventory call waits 4s on lock.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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