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---
name: server-cache-react
description: Per-Request Deduplication with React.cache(). Use when you need help with server cache react.
license: CC-BY-NC-SA-4.0
metadata:
risk: unknown
source: community
kind: mode
category: rules
---
## Per-Request Deduplication with React.cache()
Use `React.cache()` for server-side request deduplication. Authentication and database queries benefit most.
**Usage:**
```typescript
import { cache } from "react";
export const getCurrentUser = cache(async () => {
const session = await auth();
if (!session?.user?.id) return null;
return await db.user.findUnique({
where: { id: session.user.id },
});
});
```
Within a single request, multiple calls to `getCurrentUser()` execute the query only once.
