Async Parallel

---
name: async-parallel
description: Promise.all() for Independent Operations. Use when you need help with async parallel.
license: CC-BY-NC-SA-4.0
metadata:
  risk: unknown
  source: community
  kind: mode
  category: rules
---

## Promise.all() for Independent Operations

When async operations have no interdependencies, execute them concurrently using `Promise.all()`.

**Incorrect (sequential execution, 3 round trips):**

```typescript
const user = await fetchUser();
const posts = await fetchPosts();
const comments = await fetchComments();
```

**Correct (parallel execution, 1 round trip):**

```typescript
const [user, posts, comments] = await Promise.all([fetchUser(), fetchPosts(), fetchComments()]);
```