A little tip from someone coming back into Java after using modern javascript / node.js lately: Java 8's CompletableFutures are basically Java's Promises, and t

A little tip from someone coming back into Java after using modern javascript / node.js lately: Java 8's CompletableFutures are basically Java's Promises, and they have good support for doing steps in specific thread pools. (Regular Futures are way too limited: if you want to do an action as soon as a Future resolves, then you have to dedicate a thread just to blocking on that Future, which is not exactly what you want if you have a lot of simultaneous asynchronous operations of multiple steps going on.)