RxJava has some nice tools for async buffering, debounce, etc., but it pays to understand CountdownLatch, Semaphore, Mutex, ExecutorService, etc., and I would d

RxJava has some nice tools for async buffering, debounce, etc., but it pays to understand CountdownLatch, Semaphore, Mutex, ExecutorService, etc., and I would definitely not consider RxJava a substitute for other things. Do avoid anything related to the hoary old Java "Future" class, though. CompletionStage or get out!