Hands-On Reactive Programming in Spring 5

The publishOn operator

In a nutshell, the publishOn operator allows the moving part of runtime execution to a specified worker.

We avoid using the word Thread here since the underlying mechanism of the Scheduler may enqueue work to the same Thread, but the execution job may be done by a different worker from a Scheduler instance perspective. 

In order to specify the worker that should process elements at runtime, Reactor introduces a specific abstraction for that purpose, called Scheduler. Scheduler is an interface that represents a worker or pool of workers in Project Reactor. We are going to cover Scheduler later in this chapter, but for now, we will just mention that this interface is used in order to choose a specific worker for the current ...