Journey to Resilience
summary
Walmart measures scale (11,000 stores, >$500B revenue, ~70M weekly Omni transactions) and builds a program that moves teams from ad hoc outages to repeatable resilience: a five‑level maturity model level 1–5 that cuts support cost from five‑digit to a few hundred dollars per minute, a tooling stack including Resiliency Doctor, CI/CD with a production‑to‑pipeline inference loop and a decision engine for cloud placement, strict observability and playbooks plus tested pre‑prod using do‑no‑harm pre‑prod with prod traffic; results: higher team confidence, management buy‑in, and measurable drops in revenue impact.
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chapters (22)
- 0:00Preamble
- 0:30Chaos Engineering
- 0:50Walmart in numbers
- 1:46Where de we start the journey?
- 3:52Goal
- 4:19Every Outage is a Chaos Exercise
- 5:11Downtime is Ecpensive
- 7:10The Homework
- 7:25Observability
- 8:53More On-Call Prerequisites
- 11:04Generating production-like Load
- 12:29CI/CI Workflow - invest in it
- 14:34Build a Maturity Model
- 15:11Support Costs
- 15:51Build the Right Tools
- 16:34Build the Right Mindset
- 18:02What we learnt on our Journey?
- 18:19Eliminate Vanity Positions
- 19:35Don't Assume. Verify.
- 21:30Are Teams ready for Exercises?
- 22:24Where are we now? - Report card
- 24:45Thank you!
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