1# Caching with Auth
2 
3**CRITICAL**: Cache keys MUST include userId/orgId to prevent data leaking between users.
4 
5## User-Scoped Cache
6 
7```typescript
8import { auth } from '@clerk/nextjs/server';
9import { unstable_cache } from 'next/cache';
10 
11export default async function ProfilePage() {
12  const { userId } = await auth();
13  if (!userId) return <div>Not signed in</div>;
14 
15  const cachedGetUserData = unstable_cache(
16    () => getUserData(userId),
17    [`user-${userId}`],
18    { revalidate: 60, tags: [`user-${userId}`] }
19  );
20 
21  const userData = await cachedGetUserData();
22  return <div>{userData.name}</div>;
23}
24```
25 
26## Revalidate After Updates
27 
28```typescript
29'use server';
30import { revalidateTag } from 'next/cache';
31import { auth } from '@clerk/nextjs/server';
32 
33export async function updateProfile(formData: FormData) {
34  const { userId } = await auth();
35  if (!userId) throw new Error('Unauthorized');
36 
37  await db.users.update({
38    where: { id: userId },
39    data: { name: formData.get('name') as string },
40  });
41  revalidateTag(`user-${userId}`);
42}
43```
44 
45## Org-Scoped Cache
46 
47```typescript
48const { orgId } = await auth();
49const getOrgData = unstable_cache(
50  () => db.orgData.findMany({ where: { organizationId: orgId } }),
51  [`org-${orgId}-data`],
52  { revalidate: 300, tags: [`org-${orgId}`] }
53);
54```
55 
56[Docs](https://nextjs.org/docs/app/building-your-application/caching)
57