AgentSkillsCN

cloudflare-workers

针对Cloudflare Workers免费计划（CPU限制10ms）优化代码。适用于编写API路由、服务器代码、中间件或讨论性能优化时使用。

SKILL.md
--- frontmatter
name: cloudflare-workers
description: Optimize code for Cloudflare Workers free plan with 10ms CPU limit. Use when writing API routes, server code, middleware, or discussing performance optimization.

Cloudflare Workers Optimization

Constraints

  • •10ms CPU limit on free plan (not wall-clock time)
  • •No heavy computation in request handlers
  • •No blocking operations

Patterns

Prefer Streaming

typescript
// Good: Stream response
return new Response(readableStream, {
  headers: { 'Content-Type': 'application/octet-stream' },
});

// Bad: Buffer entire response
const data = await fetchAllData();
return new Response(JSON.stringify(data));

Delegate to Client

Move these to browser when safe:

  • •Image manipulation (canvas API)
  • •Complex calculations
  • •Data transformations
  • •Sorting/filtering large datasets

Efficient Algorithms

  • •Use early returns
  • •Avoid nested loops on large datasets
  • •Use Map/Set for O(1) lookups
  • •Paginate database queries

Async Patterns

typescript
// Good: Parallel fetches
const [user, settings] = await Promise.all([getUser(id), getSettings(id)]);

// Bad: Sequential fetches
const user = await getUser(id);
const settings = await getSettings(id);

Response Caching

typescript
return new Response(body, {
  headers: {
    'Cache-Control': 'public, max-age=3600',
    'CDN-Cache-Control': 'max-age=86400',
  },
});

Anti-patterns

  • •Synchronous crypto operations
  • •Large JSON parsing in hot paths
  • •Regex on untrusted input without limits
  • •Deep object cloning