Demo: a chaos experiment with a hypothesis and abort criteria
On This Lesson 3 topics
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In this lesson
design and run a safe experiment on a payment dependency; prepares SRA-006-LAB1.
Draft outline details
Step by step
- Pick the question: does checkout still succeed if the payment provider is slow?
- Write the hypothesis, steady-state metric (checkout success rate), and fault (added latency).
- Set blast radius (one percent of traffic or a test cohort), abort criteria, and who watches.
- Run, observe, and abort if the criterion is hit.
- Planned mistake: start in production at full traffic with no abort condition. Fix: start in a pre-production environment, then a small cohort, with explicit abort conditions.
- Hold the review: findings (missing timeout), actions, owner, and a repeat date.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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