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Otelic’s Quick Reference Guide to OpenTelemetry, Traces, Logs, and Debugging
Welcome to Otelic’s simple and easy-to-understand learning materials on OpenTelemetry, traces, logs, and smarter debugging. This course is designed for developers who want to:
Understand their application’s behavior.
Solve problems faster.
Improve performance with modern tools.
We use plain English to break down complex topics, making it simple for everyone to follow. Whether you’re new to observability or want to sharpen your skills, this course will give you valuable insights without the jargon. By the end, you’ll feel confident in using OpenTelemetry and Otelic.com to debug effectively and securely.

Section 1: Introduction to Observability

What is OpenTelemetry?

What is the Cloud Native Computing Foundation (CNCF)?

What Are Traces and Spans?

What Are Centralized Logs?

How Are Logs Different from Traces?

Why Is a Combination of Logs and Traces the Best Setup for Developers?

Section 2: Traces and Spans in Depth

How Do Spans Work in Traces? How Do Spans Capture Metadata in Traces?

What is the context in trace, log, and span?

What Is the Role of Sampling in Distributed Tracing?

What Are Trace Spans, and Why Are They Hierarchical?

How Does OpenTelemetry Handle Trace Data in High-Volume Environments?

What is the Difference Between Synchronous and Asynchronous Tracing?

Section 3: Logs Unpacked

How do logs assist in root cause analysis?

Why do some people say logs are all you need?

Why do some people say traces are all you need?

Why is log rotation a risk for troubleshooting?

How do error logs differ from performance logs?

What is semantic logging, and why is it important?

Why are centralized logs more secure?

Section 4: Centralized Observability

Why do centralized logs and traces provide a better developer experience?

How do centralized logs enable quicker debugging?

How do centralized logs and trace insights work?

Section 5: Alerts and Proactive Monitoring

How to use alerts and webhooks in Otelic?

How do alerts on logs and traces improve incident response?

For support, contact us at support@otelic.com

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