Javabrains POC - Microservices - Part 2 [ Netflix OSS]

https://jsonplaceholder.typicode.com/posts/

https://cloud.spring.io/

https://spring.io/projects/spring-cloud-netflix

Spring Cloud Azure
Spring Cloud for Amazon Web Services
Spring Cloud GCP
Spring Cloud Netflix [Ribbon, Feign, Eureka]
Spring Cloud Kubernetes
Spring Cloud Gateway
Spring Cloud Circuit Breaker
Spring Cloud Config
Spring Cloud OpenFeign
Spring Cloud Consul
Spring Cloud Vault
Spring Cloud Zookeeper

Spring Cloud Netflix OSS 
Feign - Declarative HTTP Client
Eureka - Service Register and Discovery
Ribbon - Client Side Load Balancing

Hytrix - Fault Tolerance Library

Spring Cloud Netflix features:

• Service Discovery: Eureka instances can be registered and clients can discover the instances using Spring-managed beans

• Service Discovery: an embedded Eureka server can be created with declarative Java configuration

• Circuit Breaker: Hystrix clients can be built with a simple annotation-driven method decorator

• Circuit Breaker: embedded Hystrix dashboard with declarative Java configuration

• Declarative REST Client: Feign creates a dynamic implementation of an interface decorated with JAX-RS or Spring MVC annotations

• Client Side Load Balancer: Ribbon

• External Configuration: a bridge from the Spring Environment to Archaius (enables native configuration of Netflix components using Spring Boot conventions)

• Router and Filter: automatic registration of Zuul filters, and a simple convention over configuration approach to reverse proxy creation

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https://spring.io/projects/spring-cloud

Release Train	Boot Version
2020.0.x aka Ilford	2.4.x
Hoxton	2.2.x, 2.3.x (Starting with SR5)
Greenwich	2.1.x
Finchley	2.0.x
Edgware	1.5.x
Dalston	1.5.x

<dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
</dependency>

https://github.com/spring-cloud/spring-cloud-netflix/issues/1582

This is happening because http://microservice_provider_user/ is not a legal host name.

Don't use Underscore for Hostnames

https://stackoverflow.com/questions/45943993/accessing-an-internal-micro-service/45952580#45952580

https://cloud.spring.io/spring-cloud-netflix/multi/multi_spring-cloud-ribbon.html

Using Ribbon with Eureka

Use Ribbon Without Eureka

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Feign

https://www.baeldung.com/intro-to-feign

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https://spring.io/projects/spring-cloud-netflix#learn

https://docs.spring.io/spring-cloud-netflix/docs/current/reference/html/

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[Ribbon]

https://www.baeldung.com/spring-cloud-rest-client-with-netflix-ribbon

[Ribbon]

https://cloud.spring.io/spring-cloud-netflix/1.0.x/#spring-cloud-ribbon

https://dzone.com/articles/spring-cloud-netflix-load-balancer-with-ribbonfeig

[Eureka]

https://stackabuse.com/spring-cloud-service-discovery-with-eureka/

https://stackabuse.com/spring-annotations-spring-cloud/

What's the difference between EnableEurekaClient and EnableDiscoveryClient?

https://stackoverflow.com/questions/31976236/whats-the-difference-between-enableeurekaclient-and-enablediscoveryclient/31993406#31993406

Difference between @RibbonClient and @LoadBalanced

https://stackoverflow.com/questions/39587317/difference-between-ribbonclient-and-loadbalanced/43022727#43022727