Debugging distributed systems

Summary

Being able to describe how you'd track down a bug in a system spanning multiple services — logs, tracing, and systematic isolation — since debugging a single process is a different skill than debugging a distributed one.

• 1Prepare a real story of debugging an issue that spanned more than one service or component.
• 2Learn the basic idea of distributed tracing — a trace ID following a request across services.
• 3Practice a structured answer: reproduce, isolate which service is at fault, form a hypothesis, verify.