Discover how to build robust offline-first applications in React Native in this 24-minute conference talk from React Advanced 2019. Learn to overcome the challenges web developers face when transitioning to mobile development, focusing on offline capabilities. Explore optimistic UX updating, data persistence between app and server, offline mode with request queuing, and reconciling updates. Gain insights into feature restrictions, caching strategies, and libraries for offline functionality. Understand the importance of treating internet connection as a secondary consideration, implementing fallback strategies, and adopting a pragmatic approach to offline-first development. Master the mindset shift required to create exceptional mobile apps that perform seamlessly with or without an internet connection.