Java Spring-Boot Microservices Example

Light-weight sample for Microservices learning

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Services Registry

• Spring Boot version: 2.5.0
• Dependencies:
  • spring-cloud-starter-netflix-eureka-server

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API Gateway

Spring Boot version: 2.3.11.RELEASE

• Dependencies:
  • spring-cloud-starter-gateway
  • spring-cloud-starter-netflix-hystrix
  • spring-cloud-starter-netflix-eureka-client
  • spring-cloud-starter-config

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Config Server

• Spring Boot version: 2.5.0
• GitHub repository -> application.yml
• Dependencies:
  • spring-cloud-config-server
  • spring-cloud-starter-netflix-eureka-client
• Zookeeper (not yet)

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Hystrix Dashboard

• Spring Boot version: 2.3.11.RELEASE
• Dependencies:
  • spring-cloud-starter-config
  • spring-cloud-starter-netflix-hystrix-dashboard
  • spring-cloud-starter-netflix-eureka-client

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Other Microservices

• Spring Boot version: 2.5.0
• Person, Department, Task Management Services
• Dependencies:
  • spring-cloud-starter-config
  • spring-cloud-starter-netflix-eureka-client
  • spring-cloud-starter-bootstrap
  • com.h2database.h2
  • org.projectlombok.lombok
  • spring-boot-starter-data-jpa
  • spring-boot-starter-web

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Docker Compose

Launch all service

$ docker-compose -f docker-compose/app.yml up -d

Zipkin

Docker The Docker Zipkin project is able to build docker images, provide scripts, and a docker-compose.yml for launching pre-built images. The quickest start is to run the latest image directly:

docker run -d -p 9411:9411 openzipkin/zipkin

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Project Links:

• Health : http://person-service:9191/actuator/health
• Eureka : http://service-registry:8761/
• Department GetMethod: http://department-service:9191/departments/1
• Hystrix: http://hystrix-dashboard:9295/hystrix
• http://hystrix-dashboard:9295/hystrix/monitor?stream=http%3A%2F%2Flocalhost%3A9191%2Factuator%2Fhystrix.stream

Maven and Docker Build -> jib

$ cd service-registry && ./mvnw -Pprod clean verify jib:dockerBuild && cd ..
$ cd config-server && ./mvnw -Pprod clean verify jib:dockerBuild && cd ..
$ cd api-gateway && ./mvnw -Pprod clean verify jib:dockerBuild && cd ..
$ cd hystrix-dashboard && ./mvnw -Pprod clean verify jib:dockerBuild && cd ..
$ cd department-service && ./mvnw -Pprod clean verify jib:dockerBuild && cd ..
$ cd person-service && ./mvnw -Pprod clean verify jib:dockerBuild && cd ..
$ cd task-service && ./mvnw -Pprod clean verify jib:dockerBuild && cd ..

Run docker-compose

$ docker-compose -f docker-compose/app.yml up -d

Stop docker-compose

$ docker-compose -f docker-compose/app.yml down

Screenshots

References:

• https://spring.io/microservices
• https://microservices.io/patterns/microservices.html
• https://www.infoq.com/articles/spring-boot-tutorial/
• https://developer.okta.com/blog/2019/05/22/java-microservices-spring-boot-spring-cloud
• https://www.manning.com/books/spring-microservices-in-action-second-edition
• https://www.manning.com/books/microservices-in-action
• https://spring.io/blog/2015/07/14/microservices-with-spring
• https://sofienebk.medium.com/building-microservices-with-spring-boot-753be739ca7d
• https://blog.scottlogic.com/2019/10/31/building-microservices-with-spring-boot.html
• https://www.javatpoint.com/microservices
• https://www.amazon.com/Building-Microservices-Designing-Fine-Grained-Systems/dp/1491950358
• https://www.amazon.com/Spring-Boot-Action-Craig-Walls/dp/1617292540
• https://www.amazon.com/Spring-Microservices-Action-John-Carnell/dp/1617293989
• https://www.oreilly.com/library/view/mastering-spring-boot/9781787127562/