bbb2f41591
- Created `openspec-ff-change` skill for fast-forward artifact creation. - Introduced `openspec-new-change` skill for structured change creation. - Developed `openspec-onboard` skill for guided onboarding through OpenSpec workflow. - Added `openspec-sync-specs` skill for syncing delta specs to main specs. - Implemented `openspec-verify-change` skill for verifying implementation against change artifacts. - Updated `.gitignore` to exclude OpenSpec generated files. - Added `skills-lock.json` to manage skill dependencies.
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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