ISR Implementation Methods

There are two main approaches to implement ISR:

1. Using Server Actions

You can add a revalidatePath and indicate that the cache for that information needs to be revalidated.

// Example: Server Action for on-demand revalidation
import { revalidatePath } from "next/cache";
 
export async function updatePostAction() {
  // Update your data source
  await updatePost();
 
  // Revalidate the specific path
  revalidatePath("/blog/[slug]");
}

2. Time-Based Revalidation

Use revalidate with time intervals. This approach causes background regeneration, and users may see stale data until the update completes.

// Example: Time-based revalidation
// pages/blog/[slug].js or app/blog/[slug]/page.js
export const revalidate = 3600; // Revalidate every hour
 
export async function generateStaticParams() {
  return posts.map((post) => ({
    slug: post.slug,
  }));
}

Each rendering strategy has its place in modern web development. The key is understanding your content's nature, performance requirements, and SEO needs to make the right choice for each page or section of your application.

Remember: You don't have to choose just one! Modern frameworks like Next.js allow you to mix different rendering strategies within the same application, using the best approach for each specific page or component.