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storyteller-microservices

Storyteller Microservices implemented with Spring Boot + Spring Cloud Netflix

• archimedes: acts as Eureka Server. Endpoint: http://localhost:8761
• config-server: external config server from a Git Repo. Endpoint: http://localhost:8888
• hystrix-dashboard: aggretated metrics using Turbine. IMPORTANT: overrides some Turbine files to allow having multiple applications on the same host. More info. Endpoint: http://localhost:10000
• images-ms: mid-tier Eureka Client that returns a random image URL. Endpoint: http://localhost:9999/images?random=true&fields=url
• stories-ms: mid-tier Eureka Client that generates a random HTML story inserting a random image gotten from the previous service. Endpoint: http://localhost:9988/stories?random=true
• storyteller-api: (master/high-availability branches) API Eureka Client that invokes stories-ms, using a Feign client, to get a random story. Endpoint: http://localhost:9977/api/stories?random=true
• gatekeeper: (zuul/high-availability branches) Zuul edge service that substitutes storyteller-api as the external entry point. Endpoint: http://localhost:9977/api/stories?random=true

This structure tries to simulate a scenario like the following:

One API service exposed to clients and two mid tier services, all of them sharing a Eureka server instance (Archimedes) and a ConfigServer that loads the properties from a Git repo.

Branch differences

• master: storyteller-api acts as a gateway for the internal microservices and uses a Feign client to invoke stories-ms. At the moment there is no way to specify a fallback method for Feign clients.
• no-config-server: same as master without using a centralized config-server.
• zuul: uses a zuul reverse-proxy instead of storyteller-api gateway.
• high-availability: high availability environment using two eureka registers, a zuul reverse proxy, and 2 instances of each service.
• high-availability-rxjava: Same as above but using reactive programming. It also adds 2 Spring Cloud Stream microservices, a log processor and a central logger. Uses Spring Cloud Sleuth in all microservices for request tracing in Zipkin. The projects have been dockerized and can be launched using docker compose.
• high-availability-rxjava-sidecar: Polyglot version in which Sidecar integrates a Node.js microservice.
• consul: Consul replaces Eureka Server as microservice registry.