Source code: https://github.com/semihhakkioglu/spring-cloud-microservice-example https://github.com/semihhakkioglu/spring-cloud-microservice-config

1. BUILDING
MICROSERVICES
WITH
SPRING CLOUD
AND
NETFLIX OSS

2. AGENDA
- Config Server
- Config Client
- Bus
- Eureka Server
- Eureka Client
- Zuul
- Feign
- Hystrix
- Hystrix Dashboard

3. Client
CC
EC
ZUUL
GATEWAY API
CONFIG
SERVER
EC
FEIGN
EC
INVOICE
SERVICE
CC
SERVICE
DISCOVE
RY
ES
HYSTRIX
DASHBOARD
FEIGN
EC
CC
MERCHANT
SERVICE

4. Service Discovery
- Maintains registry of clients with metadata
- Heartbeats (default 30 seconds)
- Dashboard
- Host/Port
- Health indicator url

5. Service Discovery
Application.java
@SpringBootApplication
@EnableEurekaServer
public class ServiceDiscoveryApplication {
public static void main(String[] args) {
SpringApplication.run(ServiceDiscoveryApplication.class, args);
}
}

6. Service Discovery
bootstrap.yml
spring:
application:
name: service-discovery
server.port: ${PORT:8761}
eureka:
instance.hostname: localhost
client:
registerWithEureka: false
fetchRegistry: false
serviceUrl.defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

7. DEMO

8. Config Server

9. Config Server
Resource Format
- /{application}/{profile}/{label}
- /{application}-{profiles}.yml
- /{label}/{application}-{profiles}.yml
- /{application}-{profiles}.properties
- /{label}/{application}-{profiles}.properties

10. Config Server
Application.java
@SpringBootApplication
@EnableConfigServer
@EnableEurekaClient
public class ConfigServerApplication {
public static void main(String[] args) {
SpringApplication.run(ConfigServerApplication.class, args);
}
}

11. spring:
application.name: config-server
cloud.config:
server.git.uri: https://github.com/semihhakkioglu/spring-cloud-microservice-config
label: develop
security.basic.enabled: false
management.security.enabled: false
server.port: ${PORT:8888}
eureka:
instance.hostname: localhost
client.serviceUrl.defaultZone: http://localhost:8761/eureka/
Config Server
bootstrap.yml

12. DEMO

13. Gateway API
Zuul
- Filtering
- Load Balancing
- Provides single point of entry to service
- By default creates route for all registered service in Eureka
Server
- http://localhost:8080/merchant-service routes to merchant-
service

14. Gateway API
Application.java
@SpringBootApplication
@EnableZuulProxy
@EnableEurekaClient
public class GatewayApiApplication {
public static void main(String[] args) {
SpringApplication.run(GatewayApiApplication.class, args);
}
}

15. Gateway API
bootstrap.yml
spring:
application:
name: gateway-api
cloud.config:
discovery.service-id: config-server
label: develop
server.port: ${PORT:8080}
eureka.client.serviceUrl.defaultZone: http://localhost:8761/eureka/

16. Gateway API
gateway-api.yml
ribbon:
ReadTimeout: 20000
ConnectTimeout: 20000
zuul:
routes:
ignoredService: '*'
invoice-service:
path: /invoices/**
serviceId: invoice-service
stripPrefix: false
merchant-service:
path: /merchants/**
serviceId: merchant-service
stripPrefix: true

17. DEMO

18. Services
Application.java
@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients
@EnableCircuitBreaker
public class InvoiceServiceApplication {
public static void main(String[] args) {
SpringApplication.run(InvoiceServiceApplication.class, args);
}
}

19. Services
bootstrap.yml
spring:
application:
name: invoice-service
cloud.config:
discovery.service-id: config-server
label: develop
server.port: ${PORT:9090}
eureka.client.serviceUrl.defaultZone: http://localhost:8761/eureka/

20. DEMO

21. Hystrix Dashboard
Application.java
@SpringBootApplication
@EnableHystrixDashboard
@EnableEurekaClient
public class HystrixDashboardApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixDashboardApplication.class, args);
}
}

22. Hystrix Dashboard
bootstrap.yml
spring.application.name: hystrix-dashboard
server.port: ${PORT:8010}
eureka:
instance:
hostname: localhost
client:
registerWithEureka: true
fetchRegistry: true
serviceUrl:
defaultZone: http://localhost:8761/eureka/

23. DEMO

24. Semih HAKKIOĞLU
https://github.com/semihhakkioglu/spring-cloud-microservice-example
https://github.com/semihhakkioglu/spring-cloud-microservice-config
THANK YOU