I made this "expert-friendly" doc, to orient all who find themselves probing the Java Streams source code in despair. It culminates in the "Stream planner" - a little tool I made to simulate how (parallel) stream operations affect memory usage and execution paths.
Go forth, use (parallel) streams with confidence, and don't run out of memory.
Go forth, use (parallel) streams with confidence, and don't run out of memory.