~/talk

Debug Like a Scientist!

Talkat CPH DevFest 2024 · 2024-08-26..08-30· [testing]
links:none on file
slides:none on file

Shows a repeatable workflow: observe surprising failures, form falsifiable hypotheses, run tiny experiments, and iterate. Examples: an intermittent integration test traced to a race where a non-thread‑safe before/after hook was toggling config; a CI flake fixed by removing noisy logging that triggered a Docker Compose bug; production 502s every 30 minutes traced to a 16 GB bootsnap cache slowing Passenger startup and resolved by invalidating the cache. Emphasizes simple, cheap experiments and shared notes to scale team debugging.

AI-written summary · about

  1. 0:00The daily struggle of bugs
  2. 5:15The scientific approach
  3. 10:01Case study: Race condition
  4. 17:14Case study: Infrastructure issues
  5. 23:40Case study: Production incidents
  6. 32:24Scaling and coaching
  7. 38:40Retaining knowledge
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