Schedulers

- [Instructor] The final major component…in Project Reactor are schedulers.…Schedulers are used as a kind of contract…for task execution.…They define how and when a task will be executed.…A scheduler can provide guarantees…such as First In First Out execution.…In fact, some of these guarantees are actually required…by the Reactive Stream specification.…

A scheduler can be used on a producing or a receiving flow.…Now let's take a look at some various factories…we can use to create a scheduler.…The first one we will take a look at is called newParallel.…This is a factory that is optimized…for fast, runnable executions.…On the other hand, the single factory is optimized…for low latency runnable executions.…

We can use immediate to get access to the current thread…or we can create a whole new scheduler out of a pre-existing…executor service using the fromExecutorService factory.…Another factory we could use is called Elastic.…The Elastic factory will create new worker pools as needed…and also reuse existing worker pools as they become idle.…