Hi HN,

I'm excited to share next-nexus, an open-source data layer library for Next.js App Router applications.

The Problem: Next.js's SSR is great for SEO, but repeatedly performing full SSR for every user visit can lead to significant server load and increased operational costs. While search engine bots only need the first render, real users often revisit pages, making continuous full SSR inefficient.

Our Solution: next-nexus was built to address this. Our core philosophy is to optimize the first render on the server, and then efficiently manage subsequent data on the client using smart caching.

How it helps: next-nexus provides a powerful, integrated data layer that supports modern React paradigms, including RSC.

  - Cost & Performance Optimization: Our intelligent rendering mechanism ensures the first render is server-optimized, while subsequent renders leverage client-side caching. This drastically reduces unnecessary server requests, cutting down server load and operational costs.
  - Enhanced Developer Experience: Easy-to-use APIs and intuitive hooks simplify complex async data operations. It also automates data hydration (no manual HydrationBoundary setup like in some other libraries), letting developers focus on core logic.
  - Seamless User Experience: Efficient caching strategies and automated data hydration mean users see content faster and interact with a fully responsive application immediately, without loading spinners.
  - App Router & RSC Ready: Built from the ground up for Next.js App Router and React Server Components.

We're passionate about making Next.js development more efficient and cost-effective.

We'd love to hear your thoughts and feedback.

- GitHub: https://github.com/next-nexus-org/next-nexus

- Docs: https://next-nexus.vercel.app

Thanks for checking it out!

Show HN: Next-Nexus – Optimize Next.js App Router SSR Costs with Smart Caching