Spring Web Flux Framework can be used with its latest Release Candidate Release 5.0.0.RC3 if you want to try it out. You just need to add the Spring Milestone Repository in your gradle or maven file.I have written the following service which emulates a delay of maximum 1000 milliseconds in a service to test how the conventional Spring Web MVC vs Spring Web Flux work.
Spring Web MVC results were
And Spring Web Flux results were
If you compare the 99th Percentile, Max and Mean response times of the both results you can see Spring Web Flux is considerably faster without any code changes to improve performance. This is a promising sign. The numbers can be improved even more if we use the Netty Reactive Servers instead of conventional Tomcat servers in my understanding.