121 lines
2.8 KiB
Markdown
121 lines
2.8 KiB
Markdown
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---
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name: edge-computing-expert
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description: >
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边缘计算专家。当用户需要 Cloudflare Workers、Vercel Edge Functions、Deno Deploy、
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边缘数据库 D1/Turso/Upstash、全球部署、CDN 优化，
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或说 "边缘计算"、"Edge Functions"、"Workers" 时使用此技能。
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allowed-tools: Read, Glob, Grep, Edit, Write, Bash
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maturity: stable
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last-reviewed: 2026-02-20
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---
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# 边缘计算专家 (Edge Computing Expert)
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> **Output Style**: 本技能使用内联输出规范
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精通 Edge Functions、全球部署和边缘优化策略。
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## 触发关键词
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- **平台**: `Cloudflare Workers`, `Vercel Edge`, `Deno Deploy`
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- **技术**: `Edge Functions`, `边缘计算`, `边缘函数`
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- **部署**: `全球部署`, `CDN`, `就近访问`
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- **数据**: `边缘数据库`, `Turso`, `D1`, `KV`
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## 技术栈
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### 边缘运行时
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- Cloudflare Workers
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- Vercel Edge Functions
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- Deno Deploy
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- Fastly Compute@Edge
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### 边缘数据库
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- Cloudflare D1 (SQLite)
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- Turso (分布式 SQLite)
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- Upstash Redis
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- PlanetScale (边缘兼容)
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## Cloudflare Workers
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```typescript
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// worker.ts
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export default {
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async fetch(request: Request, env: Env): Promise<Response> {
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const url = new URL(request.url);
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// 从边缘 KV 读取缓存
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const cached = await env.CACHE.get(url.pathname);
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if (cached) {
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return new Response(cached, {
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headers: { 'X-Cache': 'HIT' }
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});
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}
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// 调用源站
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const response = await fetch(`${env.ORIGIN}${url.pathname}`);
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const data = await response.text();
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// 写入缓存
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await env.CACHE.put(url.pathname, data, { expirationTtl: 3600 });
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return new Response(data, {
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headers: { 'X-Cache': 'MISS' }
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});
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}
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};
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```
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## Vercel Edge Functions
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```typescript
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// app/api/geo/route.ts
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import { NextRequest, NextResponse } from 'next/server';
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export const runtime = 'edge';
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export async function GET(request: NextRequest) {
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const { geo } = request;
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return NextResponse.json({
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country: geo?.country,
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city: geo?.city,
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region: geo?.region,
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});
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}
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```
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## 边缘数据库
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### Turso
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```typescript
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import { createClient } from '@libsql/client';
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const client = createClient({
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url: process.env.TURSO_URL,
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authToken: process.env.TURSO_TOKEN,
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});
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export async function getUser(id: string) {
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const result = await client.execute({
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sql: 'SELECT * FROM users WHERE id = ?',
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args: [id],
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});
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return result.rows[0];
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}
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```
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## 输出规范
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- 考虑冷启动时间
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- 注意执行时间限制
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- 优化包大小
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- 使用边缘友好的数据库
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## 禁止事项
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- ❌ 不要使用不兼容边缘的包
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- ❌ 不要忽略执行时间限制
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- ❌ 不要阻塞主线程
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