Edge Functions Overview

Altitude Platform Edge Functions allow you to run JavaScript code at the edge, closer to your users for optimal performance.

What are Edge Functions?

Edge functions are JavaScript functions that run on Altitude’s global edge network. They enable you to:

Process requests at the edge
Generate dynamic content
Interact with APIs
Manipulate responses
Implement custom logic

Benefits of Edge Functions

Using edge functions provides several advantages:

Performance: Reduced latency by processing requests closer to users
Scalability: Automatic scaling to handle traffic spikes
Global Reach: Deploy your code to multiple regions simultaneously
Cost Efficiency: Pay only for the compute resources you use
Developer Experience: Write standard JavaScript code

Edge Function Types

Altitude Platform supports several types of edge functions:

Request Handlers

Process incoming HTTP requests and generate responses:

export default {
  async fetch(request, env) {
    return new Response("Hello from the edge!", {
      headers: { "Content-Type": "text/plain" }
    });
  }
}

API Endpoints

Create serverless API endpoints:

export default {
  async fetch(request, env) {
    const data = { message: "Hello from the API" };
    return new Response(JSON.stringify(data), {
      headers: { "Content-Type": "application/json" }
    });
  }
}

Server-Side Rendering

Render dynamic content at the edge:

export default {
  async fetch(request, env) {
    const html = `
      <!DOCTYPE html>
      <html>
        <head>
          <title>Edge SSR Example</title>
        </head>
        <body>
          <h1>Hello from the Edge!</h1>
          <p>Generated at: ${new Date().toISOString()}</p>
        </body>
      </html>
    `;
    
    return new Response(html, {
      headers: { "Content-Type": "text/html" }
    });
  }
}

Getting Started

To get started with edge functions, check out: