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You can think of RX as providing an API similar to Java 8 / Groovy / Scala like API collections (methods like filter, forEach, map, flatMap etc) - but which operates on a stream of events rather than a collection. So you could think of RX as like working with asynchronous push based collections (rather than the traditional synchronous pull based collections).

In RX , if you have work with an Observable<T> which behaves quite like a Collection<T> in Java 8 so you can filter/map/concat and so forth. The Observable<T> then acts as a typesafe composable API for working with asynchronous events in a collection-like way.

Observing events on Camel endpoints

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