Modern React Patterns: Concurrent Rendering & Actions with Aurora Scharff

Aurora Scharff, Senior Consultant at Crayon, joins to break down how modern React development is evolving with features from React 18 and React 19. She explores real-world use cases for useTransition and useOptimistic, highlights improvements in async UI rendering and performance, and shares insights on building responsive interfaces with concurrent rendering patterns. The conversation also touches on server components, Next.js, and tools like Aria Kit and Redwood SDK, all shaping the next era of React development. Links Website: https://aurorascharff.no Github: https://github.com/aurorascharff X: https://x.com/aurorascharff Bluesky: https://bsky.app/profile/aurorascharff.no LinkedIn: https://www.linkedin.com/in/aurora-scharff-a86b88188 Resources Building Reusable Components with React19 Actions: https://aurorascharff.no/posts/building-reusable-components-with-react19-actions Chapters 00:00 Intro 00:18 Modern React concurrent rendering patterns explained 03:38 useTransition real-world examples 08:22 useOptimistic for faster UI feedback 30:10 React Server Components and Next.js integration 30:57 Building modern UIs with Aria Kit 34:07 Using Redwood SDK in the React ecosystem 39:00 Key takeaways and what’s next for React development We want to hear from you! How did you find us? Did you see us on Twitter? In a newsletter? Or maybe we were recommended by a friend? Fill out our listener survey (https://t.co/oKVAEXipxu)! Let us know by sending an email to our producer, Elizabeth, at [e-mail] (mailto:[e-mail]), or tweet at us at PodRocketPod (https://twitter.com/PodRocketpod). Follow us. Get free stickers. Follow us on Apple Podcasts, fill out this form (https://podrocket.logrocket.com/get-podrocket-stickers), and we’ll send you free PodRocket stickers! What does LogRocket do? LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today. (https://logrocket.com/signup/?pdr)