Uploaded June 2026 | Updated September 2026, 2 weeks ago
Many standard React best practices are actually destroying your app's performance. In this talk, Jay breaks those rules and rethinks core mental models around state, data, sync, rendering, and architecture. He analyzes the specific optimizations that make Legend List and Legend State so fast, and shows exactly how to apply them to dramatically improve the speed and responsiveness of your apps.
Don't miss any updates about App.js Conf and follow us on X:
💎 https://x.com/appjsconf
💎 https://x.com/swmansion
Many standard React best practices are actually destroying your app's performance. In this talk, Jay breaks those rules and rethinks core mental models around state, data, sync, rendering, and architecture. He analyzes the specific optimizations that make Legend List and Legend State so fast, and shows exactly how to apply them to dramatically improve the speed and responsiveness of your apps.
Don't miss any updates about App.js Conf and follow us on X:
💎 https://x.com/appjsconf
💎 https://x.com/swmansion










