> For the complete documentation index, see [llms.txt](https://hantsy.gitbook.io/java-ee-8-by-example/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hantsy.gitbook.io/java-ee-8-by-example/jaxrs.md).

# JAXRS 2.1

JAXRS 2.1 improved async feature and added Java 8 `CompletionStage` support, standardized Server Sent Event, and also added **Reactive** capability in JAXRS client.