The Scala Future API in Play Framework

As a Play Framework application developer, I think you have already come to know that the Scala Future API is very important to developing any Play Framework application.

We use the Scala Future API extensively in Play Framework applications to support asynchronous communication between components.

Let's take a Service class from a Play Framework web application. The following Service's getWeatherByCity() functions demonstrate how to return a value which is available in the future by using the Scala Future API:

class WeatherForecastingService extends CommonService { 
  override def getWeatherByCity(city:String):
   Future[List[WeatherForecasting]] =  
    Future{ 
      // Here, prepare WeatherForecasting object
    } 
} 

Here we are using the Future object to prepare a list of WeatherForecasting objects. As this component takes more...