Microservices & API Case Studies

Microservices architecture allows large applications to be built as a suite of modular components, each running independently and communicating over APIs. This lesson explores key concepts, real-world applications, and best practices through detailed case studies.

What are Microservices?

Microservices are architectural styles that structure an application as a collection of loosely coupled services. Each service can be developed, deployed, and scaled independently.

API Definition

An API (Application Programming Interface) is a set of rules and protocols for building and interacting with software applications. APIs allow different services to communicate with each other.

Benefits of Microservices

• Scalability
• Flexibility in technology stack
• Improved fault isolation
• Faster time-to-market

Case Study 1: Netflix

Netflix transitioned from a monolithic architecture to microservices to improve scalability and resilience. Each microservice handles a specific functionality, such as user authentication, recommendations, and streaming.

Technical Implementation

public class RecommendationService {
    public List

Case Study 2: Amazon

Amazon uses microservices to manage its vast e-commerce platform. Each service (e.g., product catalog, order processing, payment) operates independently, allowing for rapid development and deployment.

API Example

GET /api/products/{id}
Response: {
    "id": "123",
    "name": "Product Name",
    "price": 100.00
}

Designing Microservices

• Define service boundaries based on business capabilities.
• Ensure services are loosely coupled.
• Implement API gateways for request routing.

Monitoring and Logging

Implement centralized logging and monitoring to track service performance and troubleshoot issues.