Event-Driven Microservices in Java using Kafka & Spring Boot (Real Example + Architecture Guide)
Modern systems demand real-time, scalable, and loosely coupled architectures . That’s where event-driven microservices shine. Using: Apache Kafka Spring Boot You can build systems that: ✅ Scale easily ✅ Handle high throughput ✅ Reduce API dependency 👉 In this guide, you’ll learn architecture + real working example . đź–Ľ️ Architecture Overview (JPG) 🏗️ 1. What is Event-Driven Architecture? Instead of direct API calls: 👉 Services communicate using events Example: Order Service → publishes event Payment Service → consumes event Notification Service → reacts ✔ No tight coupling ✔ Better scalability ⚙️ 2. Core Components 🧩 Kafka Components Producer → sends events Broker → stores events Consumer → processes events Topic → event channel 🧩 Spring Boot Role Create microservices Handle event publishing/consuming Integrate with Kafka easily 🔄 3. Real Example (Order Processing System) 🎯 Flow: Order created Event published → order-created Payment service consumes Inventory service u...