Many modern iOS apps are connected to the internet.
When you need to download or upload data,
URLSession is the solution.
Together with other types,
URLSession not only transfers data over a network but also groups transfers together.
This allows you to:
- Optimize data transfers.
- Handle authentication, cookies, and caching.
- Pause, resume, or cancel network transfers.
- Download data in the background when your app is suspended.
Due to the complexity of network transfers, using
URLSession is not straightforward and presents a few architectural challenges, especially in SwiftUI apps.
We will explore all of the above in this article.