Learning RxJava - Second Edition

Starting and shutting down schedulers

Each default Scheduler is lazily instantiated. The Scheduler created by the computation(), io(), newThread(), single(), or trampoline() factory method can be disposed of at any time by calling its shutdown() method. Alternatively, all created schedulers can be disposed of by calling Schedulers.shutdown(). This stops all their threads and forbids new tasks from coming in and throws an error if you try otherwise. You can also call their start() method, or Schedulersers.start(), to reinitialize the schedulers so that they can accept tasks again.

In desktop and mobile app environments, you should not run into many cases where you have to start and stop the schedulers. On the server side, however, Java EE-based ...