Spring Boot Tutorial 0/110 lessons ~6 min read Lesson 68“Production-grade backends”

Service Discovery / Eureka

In a microservices world, services come and go.

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Focus

2 guided sections

Practice signal

Examples included

Career prep

Foundation builder

Introduction

In a microservices world, services come and go. Service discovery answers where is the orders service right now?. Eureka is Netflix's classic registry; Consul and Kubernetes' built-in DNS are common alternatives.

Informative example

bash

# Eureka Server
@SpringBootApplication
@EnableEurekaServer
public class DiscoveryApp { public static void main(String[] a){ SpringApplication.run(DiscoveryApp.class,a);} }

# application.yml (eureka server)
server.port: 8761
eureka:
  client:
    register-with-eureka: false
    fetch-registry: false

# Each service (client)
@SpringBootApplication
public class OrdersApp { ... }

# application.yml
spring:
  application:
    name: orders-service
eureka:
  client:
    service-url:
      defaultZone: http://discovery:8761/eureka

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