Cloudflare Workers

ELI5 — The Vibe Check

Workers run JavaScript at the edge — on Cloudflare's network of 300+ data centers worldwide. Your code executes in milliseconds, right next to the user. No cold starts, no containers, no server management. It's like deploying your function to every country simultaneously. The V8 isolate model means it starts in under 5ms.

Real Talk

Cloudflare Workers is an edge computing platform that runs JavaScript, TypeScript, Rust, C, and C++ on Cloudflare's global network using V8 isolates. It provides sub-millisecond cold starts, handles millions of requests per second, and integrates with Cloudflare's storage products (KV, R2, D1, Durable Objects).

Show Me The Code

export default {
  async fetch(request, env) {
    const url = new URL(request.url);
    if (url.pathname === '/api/hello') {
      return new Response(JSON.stringify({ hello: 'world' }), {
        headers: { 'content-type': 'application/json' },
      });
    }
    return env.ASSETS.fetch(request);
  },
};

When You'll Hear This

"We moved our API to Cloudflare Workers and latency dropped to single digits globally." / "Workers don't have cold starts — they use V8 isolates instead of containers."