Explore the integration of reactive applications with Fast Data architectures using Reactive Streams in this conference talk from Scala Days Berlin 2016. Dive into the streaming model of Spark and its back pressure support introduced in Spark 1.5. Learn how these features simplify the integration of Spark Streaming into reactive systems. Watch a demonstration showcasing the use of Reactive Streams to connect Spark Streaming with a reactive application, creating a cohesive reactive ecosystem. Gain insights into building scalable, resilient, and responsive data processing systems that can handle high-volume, real-time data streams effectively.