Scala Reactive Programming

The Pull pattern

Like the Throttling Reactive Pattern, the Pull Reactive Pattern is also a Reactive System's Flow control pattern.

As we discussed in the Backpressure section in Chapter 7, Working with Reactive Streams, our Reactive Systems may have the following two flavors of Producers/Consumers:

• Faster Producer/Slow Consumer
• Slow Producer/Faster Consumer

In the Faster Producer/Slow Consumer scenario, Pull-based communication is suitable because the Consumer pulls its required amount of data from the Producer to avoid Buffer Overflow issues.

In the Slower Producer/Faster Consumer scenario, Push-based communication is suitable because the Producer pushes more amounts of data from the Producer to Consumer to avoid the Consumer's waiting ...