Error Handling in Futures
Implement strategies for handling exceptions and failures gracefully within asynchronous `Future` computations.
Handling Future Failures
Asynchronous operations can fail! Just like synchronous code can throw exceptions, a Future can complete with an error instead of a successful value.
Understanding how to gracefully handle these failures is crucial for building robust concurrent applications. Without proper error handling, your program might crash or behave unexpectedly.
Future's Result: Try
When a Future completes, its result is wrapped in a scala.util.Try. This Try can be either a Success(value) or a Failure(exception).
- Success: Contains the computed value.
- Failure: Contains the exception that occurred.
The onComplete callback receives this Try object, allowing you to handle both outcomes.
All lessons in this course
- Introduction to Futures and Promises
- Composing Asynchronous Operations
- Error Handling in Futures