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Debugging in Practice

Fix code someone else wrote and left, working from symptoms alone.

중급 · Lessons 30 · Lab 10

Curriculum

From Symptom to Cause

Debugging at Code Level

Read a Traceback From the Bottom Up reading
From Traceback to Instrumentation lab
Quiz: Debugging at Code Level quiz

Separating Out Environment Problems

It Works on Our Server reading
Closing the Environment Gap lab
Quiz: Separating Out Environment Problems quiz

Narrowing Down "It's Slow"

Turning "It's Slow" Into a Number reading
Turning "It Feels Slow" Into Four Numbers lab
Quiz: Narrowing Down "It's Slow" quiz

Halving the range

The difference table

Is it them or is it us

Symptoms of a resource running out

What unguaranteed ordering causes

The one that passes on retry

Reference docs