Cf Workers

Cloudflare Workers Fundamentals

Worker Entry Point (Module)

export interface Env {
  AI: Ai;
  FEED_CACHE: KVNamespace;
  MY_DURABLE_OBJECT: DurableObjectNamespace;
}

export default {
  async fetch(request: Request, env: Env, ctx: ExecutionContext): Promise<Response> {
    const url = new URL(request.url);

    switch (url.pathname) {
      case '/health':
        return new Response('OK');
      case '/api/summarize':
        return handleSummarize(request, env);
      default:
        return new Response('Not Found', { status: 404 });
    }
  }
};

Key Concepts

• Module export pattern: Default export with fetch handler
• Request/Response handling: Standard Web API patterns
• Environment bindings: Typed via Env interface — AI, KV, Durable Objects, secrets