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14. Concurrency & Asynchrony > Introduction
Introduction
The most common concurrency scenarios are:
- Writing a responsive user interface
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In WPF, Metro, and Windows Forms applications, you must run time-consuming tasks concurrently with the code that runs your user interface to maintain responsiveness.
- Allowing requests to process simultaneously
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On a server, client requests can arrive concurrently and so must be handled in parallel to maintain scalability. If you use ASP.NET, WCF, or Web Services, the .NET Framework does this for you automatically. However, you still need to be aware of shared state (for instance, the effect of using static variables for caching.)
- Parallel programming
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Code that performs intensive calculations can execute faster on multicore/multiprocessor computers if the workload is divided between cores (Chapter 23 is dedicated to this).
