Introduction to Futures and Promises
Understand the core concepts of `Future` for asynchronous results and `Promise` for completing them.
Async Code: Why It Matters
In programming, tasks can run synchronously (one after another) or asynchronously (tasks can start without waiting for previous ones to finish).
Asynchronous programming is crucial for building responsive applications that don't freeze while waiting for slow operations like network requests or database queries.
The Problem with Blocking Calls
Imagine your program needs to fetch data from the internet. If this operation is blocking, your program will pause and do nothing else until the data arrives.
This can lead to a 'frozen' user interface or inefficient server-side applications. We need a way to perform these tasks in the background without halting the main flow.
All lessons in this course
- Introduction to Futures and Promises
- Composing Asynchronous Operations
- Error Handling in Futures