Modern React Patterns: Concurrent Rendering, Actions & What’s Next

Aurora Scharff

Web developer and consultant at Crayon Consulting

Aurora Scharff is a software developer and Microsoft MVP from Norway with a degree in Robotics and Intelligent Systems. She began her career at a financial technology startup and now serves as a consultant at Crayon Consulting, while also contributing as React Certification Content Owner at http://certificates.dev. She focuses on web development with extensive experience in React and Next.js, including active use of React Server Components.

Aurora shares her knowledge through workshops, technical blog posts, social media, demo applications, and supporting fellow developers. She regularly presents internationally at recognized conferences, contributing to the global developer community through both her speaking engagements and educational content creation.

Modern React Patterns: Concurrent Rendering, Actions & What’s Next

Async operations don’t have to mean flickering UIs and messy state management. Aurora Scharff (Web Developer & Consultant at Crayon Consulting) explores how modern React patterns address common async challenges like unstable interfaces and inefficient state updates.

▪ How concurrent rendering features (`useTransition`, `useDeferredValue`, `useOptimistic`) solve flickering pending states and race conditions.

▪ Using Actions in React 19 for async workflows with built-in optimistic updates and predictable pending states.

▪ Practical examples in the Next.js App Router: server components for streamlined data fetching, plus reusable “router-aware” UI components.

▪ Coordinating async behavior across components with Actions for custom UI feedback like progress bars, toasts, and even confetti 🎉.

▪ Looking ahead to View Transitions: integrating animations with concurrent features to create fluid, intentional visual updates.

You’ll leave with a clear roadmap for building reusable, async-safe React components while ensuring smooth and reliable user experiences.S