#78: RSC Waterfalls, Next.js 15.2, shadcn Admin, Server Actions vs API Routes, Rosen Charts, Better Performance

Next.js 15.2 – Error handling with a redesigned UI, cleaner stack traces, and a new dev indicator for tracking rendering mode and build status. Async metadata is now streamed, so page rendering isn’t blocked. Turbopack compiles up to 57.6% faster with 30% less memory usage. Plus, experimental features like React View Transitions and Node.js Middleware are here

Avoiding Server Component Waterfall Fetching with React 19 cache() – Shows how to use cache() for preloading, keeping components independent while speeding things up

Next.js ❤️ Sevalla – Sevalla is the home to your upcoming projects. Host and manage your applications, databases, and static sites in a single, intuitive platform

Teaching Next.js Route Handlers to GitHub Copilot – Ever tried getting Copilot to write a Next.js app using modern App Router features? Turns out, it struggles badly. This guide describes how you can fix that by providing the right context

How Preply improved INP on a Next.js application – Preply shares their journey improving the Interaction to Next Paint on their most critical pages. Key optimizations included debouncing keyboard events, memoizing components, and virtualizing long lists

A Practical Performance Guide Beyond Next.js – Learn how to spot performance issues using tools like Chrome DevTools, PageSpeed Insights, and the bundle analyzer

More:

• 𝕏 What's the difference between servers, serverless, and fluid compute?
• 𝕏 Server actions vs API routes in Next.js

rosen/charts – A lightweight, easy-to-use charting library built with D3.js and Tailwind. No "use client" needed, everything’s rendered on the server by default. Supports Tailwind 4.0, container queries, and shadcn CLI. Plus, 80% of the charts are free

Kibo UI – If you love shadcn/ui but wish it had more high-level components, this one's for you.

shadcn Admin Dashboard – A clean and accessible admin dashboard UI built with shadcn and Vite. It comes with a sidebar, global search, dark mode, and 10+ pages. Perfect for stealing (I mean, "getting inspired by") for your own projects

react explorer – Turn any React website into an interactive graph. Not sure how useful this is but it looks pretty cool

Some cool OSS releases from the team behind OpenStatus:

• 𝕏 Google Places API meets shadcn
• Powerful Data-Table for React
• The React data-table I always wanted

Vercel’s Fluid Compute and what it means for AWS Lambda – Fluid Compute lets a single function handle multiple requests, reducing cold starts and cutting down on wasted compute time. The author explores how this impacts AWS Lambda, especially in AI-heavy workloads where response times can be slow. How will AWS respond?

React, Solid, htmx: Part 2 – A closer look at the current state of React, Solid, and htmx. These three are shaping the future of web development in their own ways

React "as" Prop Using TypeScript – Learn how to type the "as" prop in React to dynamically change the rendered HTML tag

It’s probably time to stop recommending Redux – This opinion piece makes the case that for most apps, local state, API cache, and props outshine Redux and its cousins.