A practical approach to building truly native cross-platform applications at scale
summary
Dream11 describes migrating a large native app to React Native, then reverting a rushed March 2022 launch after user complaints and revenue loss, and rebuilding with hard metrics: 2500 pull requests, 200+ screens migrated and 70+ developers over the project, 230M users on 190k device models. Key wins: bridgeless mode (0.73+) to remove serialization, 4,000+ end‑to‑end tests running in ~1 hour, crash/ANR rates at ~99.7%/99.8% user‑session free, a custom benchmarking tool, and open source work (fast-image fork, react‑native‑mqtt).
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chapters (9)
- 0:00How React Native works
- 4:22Indian mobile landscape
- 5:41Dream11 migration overview
- 8:04Lessons from migration failure
- 9:56Optimizing app vitals
- 14:32Testing and quality assurance
- 19:42Performance optimization
- 25:04Introducing RN benchmarking
- 26:38Open source contribution
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