How to Deploy Applications with Cloudflare Workers

Cloudflare Workers runs JavaScript at the edge — 300+ data centres worldwide with sub-1ms cold starts.

Install and Create Project

npm install -g wrangler
wrangler auth login
wrangler init my-worker && cd my-worker

Worker Code

export default {
  async fetch(request, env) {
    const url = new URL(request.url);
    if (url.pathname.startsWith('/api/')) {
      return fetch('https://api.yourdomain.com' + url.pathname, {
        headers: { 'Authorization': 'Bearer ' + env.API_KEY }
      });
    }
    return fetch(request);
  }
};

Deploy

wrangler secret put API_KEY
wrangler deploy

Conclusion

Cloudflare Workers reduces origin server load globally. Our team implements edge computing solutions using Workers.