Getting Started with Spring Boot Microservice

Getting Started with Spring Boot Microservic

Microservices architecture has become the standard for building scalable, maintainable backend systems. In this post, I'll walk through setting up a basic Spring Boot microservices system from scratch.

What We're Building

We'll create three services:

• Eureka Server service registry

• API Gateway - single entry point

• User Service - a sample business service

Setting Up Eureka Server

Start with a new Spring Boot project and add the spring-cloud-starter-netflix-eureka-server dependency.

java
@SpringBootApplication
@EnableEurekaServer
public class EurekaServerApplication {
    public static void main(String[] args) {
        SpringApplication.run(EurekaServerApplication.class, args);
    }
}

In application.yml:

yaml
server:
  port: 8761
eureka:
  client:
    register-with-eureka: false
    fetch-registry: false

Setting Up the API Gateway

Use Spring Cloud Gateway with the spring-cloud-starter-gateway dependency. Configure routes in application.yml:

yaml
spring:
  cloud:
    gateway:
      routes:
        - id: user-service
          uri: lb://USER-SERVICE
          predicates:
            - Path=/user-service/**
          filters:
            - StripPrefix=1