Advanced API Orchestration in Headless & Composable Architecture

1. Introduction

API orchestration involves the integration of multiple services to deliver a unified experience, especially in headless and composable architectures. This lesson covers advanced strategies in orchestrating APIs effectively.

2. Key Concepts

• **API Gateway**: Serves as a single entry point for API requests, managing routing, composition, and protocol translation.
• **Service Composition**: The process of combining multiple services to create a single response.
• **Data Aggregation**: Collecting data from multiple sources and combining it into a cohesive format.
• **Workflow Automation**: Using orchestration tools to automate sequences of API calls based on predefined triggers.

3. Step-by-Step Process

const express = require('express');
const axios = require('axios');

const app = express();

app.get('/aggregate', async (req, res) => {
    const [service1, service2] = await Promise.all([
        axios.get('https://service1.example.com/api'),
        axios.get('https://service2.example.com/api')
    ]);
    res.json({
        service1Data: service1.data,
        service2Data: service2.data
    });
});

app.listen(3000, () => {
    console.log('API Gateway running on port 3000');
});
            

graph TD;
    A[Start] --> B{API Request?};
    B -- Yes --> C[Call API Gateway];
    B -- No --> D[Return Error];
    C --> E[Aggregate Data];
    E --> F[Return Combined Response];
            

4. Best Practices

• Use caching to reduce API call delays and improve performance.
• Monitor API usage and performance metrics to identify bottlenecks.
• Implement robust error handling and logging for better debugging.
• Keep your API documentation up to date for easier maintenance.

5. FAQ