AWS API Gateway Patterns: Building Scalable APIs
AWS

AWS API Gateway Patterns: Building Scalable APIs

Learn essential patterns and best practices for designing and implementing APIs using Amazon API Gateway, including security, integration patterns, and performance optimization

February 27, 2024
DevHub Team
2 min read

Amazon API Gateway enables you to create, publish, maintain, monitor, and secure APIs at any scale. This guide explores common patterns and best practices for building robust APIs.

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API Design Patterns

1. RESTful API Structure

openapi: 3.0.0 info: title: Product API version: 1.0.0 paths: /products: get: summary: List products parameters: - name: category in: query schema: type: string - name: limit in: query schema: type: integer responses: '200': description: List of products content: application/json: schema: type: array items: $ref: '#/components/schemas/Product'

2. Lambda Integration

exports.handler = async (event) => { try { const pathParams = event.pathParameters || {}; const queryParams = event.queryStringParameters || {}; const body = event.body ? JSON.parse(event.body) : {}; switch (event.httpMethod) { case 'GET': return await handleGet(pathParams, queryParams); case 'POST': return await handlePost(body); case 'PUT': return await handlePut(pathParams, body); case 'DELETE': return await handleDelete(pathParams); default: return { statusCode: 405, body: JSON.stringify({ error: 'Method not allowed' }) }; } } catch (error) { return { statusCode: 500, body: JSON.stringify({ error: error.message }) }; } };

Best Practices

  1. API Design

    • Use consistent naming conventions
    • Implement proper versioning
    • Design for backward compatibility
    • Use appropriate HTTP methods
  2. Security

    • Implement authentication
    • Use API keys for B2B
    • Enable WAF protection
    • Implement request validation
  3. Performance

    • Enable caching where appropriate
    • Implement throttling
    • Use compression
    • Monitor latency
  4. Monitoring

    • Set up CloudWatch metrics
    • Configure access logging
    • Monitor error rates
    • Track usage patterns

References

  1. API Gateway Documentation
  2. Best Practices
  3. Security
  4. Performance
API Gateway
REST
Serverless
Integration