reactor-core/src/main/java/reactor/core/scheduler/Schedulers.java
public static Scheduler newParallel(String name, int parallelism, boolean daemon) {
		return newParallel(parallelism,
				new ReactorThreadFactory(name, ParallelScheduler.COUNTER, daemon,
						true, Schedulers::defaultUncaughtException));
	}
public static Scheduler newParallel(String name, int parallelism, boolean daemon) {
		return newParallel(parallelism,
				new ReactorThreadFactory(name, ParallelScheduler.COUNTER, daemon,
						true, Schedulers::defaultUncaughtException));
	}
{@link Scheduler} that hosts a fixed pool of single-threaded ExecutorService-based
workers and is suited for parallel work. This type of {@link Scheduler} detects and
rejects usage of blocking Reactor APIs.

@param name Thread prefix
@param parallelism Number of pooled workers.
@param daemon false if the {@link Scheduler} requires an explicit {@link
Scheduler#dispose()} to exit the VM.

@return a new {@link Scheduler} that hosts a fixed pool of single-threaded
ExecutorService-based workers and is suited for parallel work