Edge Computing with Cloudflare Workers

Edge computing moves computation closer to where users are, reducing latency and improving experience. Cloudflare Workers is one of the most accessible edge computing platforms available.

What Is Edge Computing?

Traditional computing runs on centralized data centers. Edge computing distributes your code across Cloudflare's global network of 300+ data centers, so it runs milliseconds from your users.

Why Workers?

• Cold start in <5ms — no container startup overhead
• V8 isolates — lightweight, secure execution environments
• Global by default — code deploys to every edge location
• Generous free tier — 100,000 requests/day

A Simple Worker

export default {
  async fetch(request) {
    const url = new URL(request.url);

    if (url.pathname === '/api/hello') {
      return Response.json({
        message: 'Hello from the edge!',
        region: request.cf?.colo,
      });
    }

    return new Response('Not Found', { status: 404 });
  },
};

Using Bindings

Workers can connect to Cloudflare's storage services:

export default {
  async fetch(request, env) {
    // D1 Database
    const { results } = await env.DB.prepare(
      'SELECT * FROM posts WHERE published = ?'
    ).bind(true).all();

    // KV Storage
    const cached = await env.MY_KV.get('key');

    // R2 Storage
    const obj = await env.MY_BUCKET.get('file.txt');

    return Response.json({ posts: results });
  },
};

Edge computing is the future of web development, and Workers makes it accessible today.