## Relevant articles: - [Guide to UriComponentsBuilder in Spring](http://www.baeldung.com/spring-uricomponentsbuilder) - [Returning Custom Status Codes from Spring Controllers](http://www.baeldung.com/spring-mvc-controller-custom-http-status-code) - [The Guide to RestTemplate](http://www.baeldung.com/rest-template) - [Spring RequestMapping](http://www.baeldung.com/spring-requestmapping) - [ETags for REST with Spring](http://www.baeldung.com/etags-for-rest-with-spring) - [Spring and Apache FileUpload](http://www.baeldung.com/spring-apache-file-upload)