Difference Await.ready and Await.result
I know this is quite an open ended question and I apologize.
I can see that Await.ready returns Awaitable.type while Await.result returns T but I still confuse them.
What are the difference between the two?
Is one blocking and the other one non-blocking?
Answer
They both block until the future completes, the difference is just their return type.
The difference is useful when your Future throws exceptions:
def a = Future { Thread.sleep(2000); 100 }
def b = Future { Thread.sleep(2000); throw new NullPointerException }
Await.ready(a, Duration.Inf) // Success(100)
Await.ready(b, Duration.Inf) // Failure(java.lang.NullPointerException)
Await.result(a, Duration.Inf) // 100
Await.result(b, Duration.Inf) // crash with java.lang.NullPointerException