Case study · E‑commerce · Node/Next · 6 months
Retail Platform — Escaped Defects Down 58%
Stabilized CI, SLOs, and refactoring of brittle modules improved reliability and delivery speed.
Context
- Monolithic checkout with flaky tests and frequent regressions during high‑traffic events.
- Incomplete CI leading to manual hotfixes and unpredictable releases.
Actions
- Introduced SLOs for checkout success and error budget tracking.
- Refactored brittle payment integration with contract tests and feature toggles.
- Stabilized CI with test quarantine, flake tracking, and retry policies.
Results
- Escaped defects reduced by 58% quarter over quarter.
- Deploy frequency increased 28%, with rollback rate near zero.
- Customer support tickets related to checkout dropped 22%.
-58%
Escaped defects
+28%
Deploy frequency
+12
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