Next.js keeps evolving as the go-to framework for building fast React apps. One of its biggest advantages is supporting multiple rendering strategies in the same app:

• Static Site Generation (SSG)
• Server-Side Rendering (SSR)
• Client-Side Rendering (CSR)
• Incremental Static Regeneration (ISR)

This flexibility lets you serve content based on your use case—fast static content, dynamic content when needed, and everything in between.

Hybrid Rendering in Practice

You can mix SSR and SSG in the same project. For example:

• A homepage rendered statically at build time
• A product page rendered with SSR for real-time pricing
• A blog post page updated every 10 minutes with ISR

This gives you speed and freshness.

Incremental Static Regeneration (ISR)

ISR allows you to update static pages after deployment without rebuilding the whole site. You set a revalidate time per page, and Next.js handles the regeneration in the background.

export async function getStaticProps() {
  const data = await fetchData();

  return {
    props: { data },
    revalidate: 600, // Regenerate the page every 10 minutes
  };
}

The first request after the revalidate time triggers the update. Users never see a loading state.

Example Use Case

Let’s say you're building an e-commerce site:

• /products can use SSG for performance.
• /products/[id] can use SSR or ISR to show real-time stock or price.
• /checkout uses CSR for dynamic interaction.

This setup improves speed, SEO, and developer experience without sacrificing flexibility.

Final Thoughts

Next.js makes high-performance React apps easier to build. With features like ISR, you can have the best of both worlds—fast, static-like performance with dynamic data updates when needed.