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Understanding Cloudflare Workers

Learn how to build and deploy serverless functions with Cloudflare Workers

Dan

Cloudflare Workers provide a serverless execution environment that allows you to create entirely new applications or augment existing ones without configuring or maintaining infrastructure.

What are Cloudflare Workers?

Cloudflare Workers run on V8 isolates, offering a lightweight alternative to containers or virtual machines. They:

Getting Started

To create your first Worker:

  1. Sign up for a Cloudflare account
  2. Install Wrangler CLI tool
  3. Create and deploy your first Worker
addEventListener('fetch', event => {
  event.respondWith(handleRequest(event.request))
})

async function handleRequest(request) {
  return new Response('Hello worker!', {
    headers: { 'content-type': 'text/plain' },
  })
}