Architecture Decision Records Reactive Principles reactive ( streams ) graphical explanation https://github.com/ReactiveX/RxJava/wiki https://reactivex.io/RxJava/2.x/javadoc/2.0.8/io/reactivex/Single.html Concurrency vs Parallelism concurent system - multiply actions in progress ( can be/not executed in the same time ) parallel system - multiply actions in progress and executed in the same time ( executed simultaneously ) Deployment Monitoring Data history
