Java Streams and Caffeine Dreams

The Java Streams API was introduced over ten years ago. It was since revised numerous times, most recently with the new Gatherer API in Java 24. We’ll start by taking a closer look at some important concepts like laziness, intermediate and terminal operations, spliterators, and parallelism. Then we’ll look at some code to explain common anti-patterns, create our own stream generators, and learn how batch data efficiently.