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Tommaso CasaburiandClaude Opus 4.6
189d1c2165
Mirrors .cursor and .codex structure with Claude model assignments: - haiku for lighter tasks (translator, browser-check, profiler) - sonnet for standard tasks (code-quality, plan-implementer, etc.) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
29 lines
654 B
Markdown
29 lines
654 B
Markdown
---
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title: Promise.all() for Independent Operations
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impact: CRITICAL
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impactDescription: 2-10× improvement
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tags: async, parallelization, promises, waterfalls
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---
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## Promise.all() for Independent Operations
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When async operations have no interdependencies, execute them concurrently using `Promise.all()`.
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**Incorrect (sequential execution, 3 round trips):**
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```typescript
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const user = await fetchUser()
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const posts = await fetchPosts()
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const comments = await fetchComments()
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```
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**Correct (parallel execution, 1 round trip):**
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```typescript
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const [user, posts, comments] = await Promise.all([
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fetchUser(),
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fetchPosts(),
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fetchComments()
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])
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```
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