Spring Starter Guides
async-method: https://spring.io/guides/gs/async-method/
consuming-rest: https://spring.io/guides/gs/consuming-rest/
rest-service: https://spring.io/guides/gs/rest-service/
soap-service: https://spring.io/guides/gs/producing-web-service/
spring-boot-docker: https://spring.io/guides/gs/spring-boot-docker/
messaging-reactor: https://spring.io/guides/gs/messaging-reactor/
uploading-files: https://spring.io/guides/gs/uploading-files/
messaging-reactor: https://spring.io/guides/gs/messaging-reactor/
reactor-thumbnailer: https://spring.io/guides/gs/reactor-thumbnailer/
Non-spring guides: async-rest-service: http://www.jayway.com/2014/09/09/asynchronous-spring-service/