API integration guide

Integrating external APIs allows you to extend your application's functionality. This guide covers how to securely and efficiently connect to third-party services within LegionEdge.

1. Finding the Right API

Before writing code, ensure the API meets your needs:

• Check the documentation.
• Look for authentication requirements.
• Review rate limits and pricing.

2. Managing API Keys

Never hardcode API keys directly into your source code.

1. Add the keys to your local .env file for development.
2. In the LegionEdge dashboard, navigate to Environment Variables and add the keys for your production environment.
3. Access them in your code securely using your framework's environment variable system (e.g., process.env.API_KEY).

3. Making API Requests

Depending on your environment (client-side vs. server-side), you have different options for making requests.

Client-Side

Use fetch or a library like axios to make requests from the browser. Note: Avoid exposing secret API keys on the client.

fetch('https://api.example.com/data')
  .then(response => response.json())
  .then(data => console.log(data));

Server-Side

Make requests from a backend service, serverless function, or server-side rendered page to keep API keys hidden from the browser.

// Example in Node.js
const response = await fetch('https://api.example.com/data', {
  headers: {
    'Authorization': `Bearer ${process.env.SECRET_API_KEY}`
  }
});
const data = await response.json();

4. Handling Errors

APIs fail. Always implement robust error handling.

• Check the response status code (response.ok).
• Use try/catch blocks for asynchronous code.
• Provide fallback UI or meaningful error messages to users.

5. Rate Limiting and Caching

• Respect the API's rate limits to avoid being blocked.
• Implement caching (e.g., using Redis or an in-memory cache) to reduce the number of requests you make to the external API, improving performance and saving costs.

Conclusion

By managing your keys securely, handling errors gracefully, and optimizing requests, you can build reliable integrations with any API.