Simple examples of implementation of Spring Cloud Proof-of-Concept implementation of cloud scalable simple e-commerce. Final architecture 1. basic business decomposition split into two module (product, inventory) 2. external configuration file-system support (native) 3. service discovery 4. service discovery & random port Solved: https://blog.joshmlwood.com/eureka-spring-cloud-random-port/ 5. client-side load balancing ######Feign client ######Load balancing 6. circuit breaker 7. API gateway