This is a summary of the talk „A Pragmatic View of Reactive“ on ScalaDays Amsterdam. If you prefer watching a video, there’s a recording on YouTube. Or if you prefer German, there’s an even longer German version of this on Jaxenter. The term reactive (as in reactive systems, or reactive architecture) is defined in the Reactive Manifesto. It describes systems that are so elastic and resilient that they are always responsive, and they achieve this through asynchronous message passing. N...