Systematic debugging: a forensic engineering guide

What you get

• Build a reliable reproduction before changing a single line of code
• Bisect across time, code, load, and data to shrink the search space fast
• Instrument boundaries and branches instead of reading code and guessing
• Run a hypothesis loop that ends only when you have the real root cause
• Write a post-mortem that prevents the whole family of bugs, not just this one

Inside

• Why most bugs get fixed twice
• Reproduce before you theorize
• Bisect in two dimensions (time and space)
• Instrument, do not assume
• Hypothesis loop to root cause
• Five whys and defense in depth
• Post-mortem and harden
• Ship checklist

Prefer a walkthrough? Watch the companion webinar.