Can You Apply Reactive Programming to Legacy Services? This WebFlux Example Says You Can | HackerNoon
Briefly

Reactive programming, rooted in the 1960s, focuses on asynchronous data streams and their transformations, embodying a declarative paradigm reminiscent of dataflow programming and its historical context.
The observer pattern underpins reactive programming, emphasizing a publisher-subscriber model where producers trigger events, publishers emit data, and subscribers await incoming data streams.
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