mirror of
https://github.com/kjanat/livedash-node.git
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Kaj Kowalski
cd05fc8648
- Fix syntax errors in skills markdown files (.github/skills, .opencode/skills) - Change typescript to tsx for code blocks with JSX - Replace ellipsis (...) in array examples with valid syntax - Separate CSS from TypeScript into distinct code blocks - Convert JavaScript object examples to valid JSON in docs - Fix enum definitions with proper comma separation
36 lines
1.1 KiB
Markdown
36 lines
1.1 KiB
Markdown
---
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title: Prevent Waterfall Chains in API Routes
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impact: CRITICAL
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impactDescription: 2-10× improvement
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tags: api-routes, server-actions, waterfalls, parallelization
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---
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## Prevent Waterfall Chains in API Routes
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In API routes and Server Actions, start independent operations immediately, even if you don't await them yet.
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**Incorrect (config waits for auth, data waits for both):**
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```typescript
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export async function GET(request: Request) {
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const session = await auth();
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const config = await fetchConfig();
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const data = await fetchData(session.user.id);
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return Response.json({ data, config });
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}
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```
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**Correct (auth and config start immediately):**
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```typescript
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export async function GET(request: Request) {
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const sessionPromise = auth();
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const configPromise = fetchConfig();
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const session = await sessionPromise;
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const [config, data] = await Promise.all([configPromise, fetchData(session.user.id)]);
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return Response.json({ data, config });
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}
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```
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For operations with more complex dependency chains, use `better-all` to automatically maximize parallelism (see Dependency-Based Parallelization).
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