React compiler was introduced to tackle massive re-rendering issues within a react application. It looks at the code and figures out if a certain component or a value can be memoized to limit re-rendering. Manual memoization with useCallback(), useMemo(), or React.memo() is still recommended. Learn how to integrate React Compiler with Astro projects using babel plugins. Explore installation steps, compatibility with different React versions, and integration with Astro. Follow a similar approach to integrate react compiler with frameworks using Vite. Test performance post-integration with react-scan by Aiden Bai.