Consistently Improve App Performance with DMAIC and Reassure
Article Summary
Performance testing in React Native often feels reactive and chaotic. Callstack's engineering team shows how borrowing a Six Sigma methodology can turn it into a repeatable, data-driven process.
This article from Callstack introduces DMAIC (Define, Measure, Analyze, Improve, Control), a structured framework originally from manufacturing, and shows how to apply it to React Native performance optimization using their open-source tool Reassure. It's a systematic approach to catching performance regressions before they reach production.
Key Takeaways
- DMAIC provides five phases: Define metrics, Measure baselines, Analyze bottlenecks, Improve code, Control with CI
- Reassure enables performance testing for React components directly in your test suite
- Automated performance checks in CI prevent regressions from merging
- The framework works for both greenfield apps and legacy codebases
Critical Insight
Combining DMAIC methodology with Reassure transforms ad-hoc performance fixes into a sustainable, measurable improvement cycle that catches issues early.
