RequestStrategy

All Known Implementing Classes:

MaxInFlightRequestStrategy, OneByOneRequestStrategy$, WatermarkRequestStrategy, ZeroRequestStrategy$
```
public interface RequestStrategy
```
An ActorSubscriber defines a RequestStrategy to control the stream back pressure.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`requestDemand(int remainingRequested)`	Invoked by the `ActorSubscriber` after each incoming message to determine how many more elements to request from the stream.

- Method Detail
  - requestDemand
```
int requestDemand(int remainingRequested)
```
    Invoked by the ActorSubscriber after each incoming message to determine how many more elements to request from the stream.
    
    Parameters:
    
    remainingRequested - current remaining number of elements that have been requested from upstream but not received yet
    
    Returns:
    
    demand of more elements from the stream, returning 0 means that no more elements will be requested for now