Slides from the presentation regarding Reactive Streams implementations and Reactive Streams standard introduced in Java 9. This presentation was shown during JDD Conference on the 3rd of October 2017. I've also presented this talk during JUG meetup in Kraków on 4th of December 2017, infoMEET conference in Wrocław on 16th of December 2017 and Hackin' Gliwice mini-conference in Gliwice on 15th of March 2018.