In this last chapter of the book, we have provided the reader with a glimpse into real-life professional programming and a short overview of the challenges of the trade. We have revisited many of the modern terms used in relation to big data processing using highly-scalable responsive and resilient reactive systems that are able to solve the challenging processing, problems of the modern age. We have even provided code examples of such systems, which may serve as the first step for your real-life project.
We hope that you remain curious, that you will continue studying and experimenting, and that you will eventually build a system that will solve a real problem and bring more happiness to the world.