Have you ever worked with reactive programming and used it in your projects?

Reactive programming is a paradigm focused on working with asynchronous data streams and events. In Java, libraries such as Reactor or RxJava are often used for this purpose.

Experience with reactive programming typically involves creating applications that respond to data changes or events without blocking threads, which enhances performance and responsiveness.

An example of using Reactor to process a data stream:

Flux.just("apple", "banana", "cherry")
    .filter(fruit -> fruit.startsWith("b"))
    .subscribe(System.out::println); // Will output "banana"

If you have worked with reactive streams in projects, it usually relates to building high-load systems where efficiently processing a large number of events is crucial.