Learn how to develop Java microservices using Spring Boot with a real-world example. Step-by-step tutorial covering service structure, communication, and deployment.🚀

Ramesh Fadatare

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Mar 24, 2025

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📌 Why Use Java for Microservices?

Java is:

• Mature and widely adopted
• Rich in frameworks like Spring Boot, Micronaut, Quarkus
• Compatible with Docker, Kubernetes, and cloud-native architecture
• Supported by a huge ecosystem of libraries

🧱 Architecture Example: E-Commerce System

Let’s assume you’re building an online shopping platform. You can split it into the following microservices:

🧪 Step 1: Choose Framework → Spring Boot

Use Spring Boot 3+ with Spring Cloud to build and scale microservices easily.

🛠 Step 2: Create Individual Projects

Create a separate Spring Boot project for each service.

📁 Folder Structure:

ecommerce-microservices/
├── user-service
├── product-service
├── order-service
├── payment-service
├── notification-service

Each service should be independently buildable and deployable.

🔧 Step 3: Add Dependencies (Spring Boot + Java 21)

Use Spring Initializr: https://start.spring.io

✅ Common Dependencies for Each Microservice:

• Spring Web
• Spring Boot DevTools
• Spring Data JPA
• H2 or MySQL
• Spring Boot Actuator
• Lombok
• Spring Cloud Config (optional)
• Spring Security (if needed)