The most highlighted feature of the latest version of the Spring Framework is the new reactive stack web framework. Reactive is the update that takes us to the future. This area of technology is gaining popularity with every passing day, which is the reason why Spring Framework 5.0 has been launched with the capability of reactive programming. This addition makes the latest version of the Spring Framework convenient for event-loop style processing, which enables scaling with a small number of threads.

The Spring 5 Framework implements the reactive programming pattern by using the reactor internally for its own reactive support. A reactor is a Reactive Stream implementation that extends the basic Reactive Streams. Twitter has been implemented as a reactive passed by using Reactive Streams.