### Relevant Articles: 

- [A Guide to OkHttp](http://www.baeldung.com/guide-to-okhttp)
- [A Guide to Google-Http-Client](http://www.baeldung.com/google-http-client)
- [Asynchronous HTTP with async-http-client in Java](http://www.baeldung.com/async-http-client)
- [WebSockets with AsyncHttpClient](http://www.baeldung.com/async-http-client-websockets)