Why Isn\'t My Next.js API Route Data Updating After Deployment?

Data Caching in Next.js API Routes: Troubleshooting Updates

When deploying a Next.js application that fetches data from a database via API endpoints, it's possible to encounter issues where the data remains static despite changes made in the database after deployment. The root cause often lies in caching mechanisms implemented by Next.js in production mode.

Understanding Caching in Next.js

In the app directory and on production, Next.js caches data retrieved in API routes and server components by default. This optimizes performance by reducing database queries and improving response times. However, it can interfere with data updates.

Disabling Caching

To prevent caching, you can modify the fetch() method with the following options:

• revalidate: Specifies how often a fetch() call should revalidate its cache, in seconds.
• cache: Allows you to control the caching behavior of the request. "no-store" disables caching entirely.

<code class="javascript">fetch('https://...', { next: { revalidate: 10 } }); </code>

Route Segment Config

If you're not using fetch() or want to configure caching at the route level, you can use route segment config. This allows you to set caching options within route components.

<code class="javascript">// layout.js OR page.js OR route.js

import prisma from './lib/prisma';

/*
  Below option is when you want no caching at all, there are more options
  on the doc depending on your needs. 
*/
export const dynamic = "force-dynamic";

async function getPosts() {
  const posts = await prisma.post.findMany();
  return posts;
}

export default async function Page() {
  const posts = await getPosts();
  // ...
}</code>

By applying these caching adjustments, you can ensure that your Next.js application retrieves fresh data from the database after deployment, maintaining accuracy and real-time updates.

The above is the detailed content of Why Isn\'t My Next.js API Route Data Updating After Deployment?. For more information, please follow other related articles on the PHP Chinese website!