Spring Boot Eureka Server is a service registry that enables service discovery in a microservices architecture. It allows microservices to register themselves and discover other services dynamically. This guide will walk you through setting up and configuring a Spring Boot Eureka Server.
In this section, we clarify Why Use Eureka Server? and summarize the key points you will apply in implementation.
Ensure you have the following:
In this section, we clarify Step 1: Add Dependencies and summarize the key points you will apply in implementation.
Maven:
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId> </dependency>
Gradle:
implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-server'
Create an application.yml file for Eureka Server configuration.
server: port: 8761 spring: application: name: eureka-server eureka: client: register-with-eureka: false fetch-registry: false server: wait-time-in-ms-when-sync-empty: 5
Note: The Eureka Server does not register itself.
Start the Eureka Server application:
./mvnw spring-boot:run
or using Gradle:
gradle bootRun
Access the Eureka Server dashboard:
http://localhost:8761/
In this section, we clarify Step 4: Register a Client Application and summarize the key points you will apply in implementation.
Add the Eureka Client starter first so this application can register with the server and participate in service discovery.
Maven:
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency>
Gradle:
implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-client'
In the client's application.yml, add the following:
spring: application: name: eureka-client eureka: client: service-url: defaultZone: http://localhost:8761/eureka/
The sample below provides a minimal client implementation so you can validate the server integration end to end.
Run the Eureka Client application:
./mvnw spring-boot:run
or using Gradle:
gradle bootRun
Check if the client has registered with Eureka Server by visiting:
http://localhost:8761/
You now have a practical Spring Boot Eureka Server implementation with a clear, production-friendly Spring Boot structure. As a next step, adapt configuration and tests to your own domain, then validate behavior under realistic traffic and failure scenarios.
package com.example.eurekaserver; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer; @SpringBootApplication @EnableEurekaServer public class EurekaServerApplication { public static void main(String[] args) { SpringApplication.run(EurekaServerApplication.class, args); } }
package com.example.eurekaserver import org.springframework.boot.autoconfigure.SpringBootApplication import org.springframework.boot.runApplication import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer @SpringBootApplication @EnableEurekaServer class EurekaServerApplication fun main(args: Array<String>) { runApplication<EurekaServerApplication>(*args) }
package com.example.eurekaclient; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @SpringBootApplication @RestController @RequestMapping("/client") public class EurekaClientApplication { @GetMapping public String getClientMessage() { return "Hello from Eureka Client!"; } public static void main(String[] args) { SpringApplication.run(EurekaClientApplication.class, args); } }
package com.example.eurekaclient import org.springframework.boot.autoconfigure.SpringBootApplication import org.springframework.boot.runApplication import org.springframework.web.bind.annotation.GetMapping import org.springframework.web.bind.annotation.RequestMapping import org.springframework.web.bind.annotation.RestController @SpringBootApplication @RestController @RequestMapping("/client") class EurekaClientApplication { @GetMapping fun getClientMessage(): String { return "Hello from Eureka Client!" } } fun main(args: Array<String>) { runApplication<EurekaClientApplication>(*args) }
