I'm really not sure about Reactive programming (eg. ReactiveX).

About 5 years ago I was really getting into it before changing jobs. Then didn't touch it at my new job. I just changed teams and am seeing little bits of RxJava in places, and it's tickling my fancy again.

I love the way in which it does concurrency and supports backpressure, but I wonder why it hasn't caught on more.

Is it used much in frontend (ie. RxJS)? I haven't seen it much in my company, though I dabbled in it 5 years ago with Angular and was fun.

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