Spent some time digging into React Server Components today. The mental model shift is significant — components that never ship JavaScript to the client, yet can directly access databases and file systems.

Key Takeaways

• Server Components are the default in Next.js App Router
• Use "use client" only when you need interactivity
• Data fetching becomes much simpler without useEffect chains

The composability of mixing server and client components in the same tree is elegant once you get used to it.

Writing up a fuller note on this: React Server Components.