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[Source] A new timer in .NET 6, PeriodicTimer, is used

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Posted on 8/2/2023 7:12:40 PM | | |
Requirements: Use ASP.NET Core 6 to create a new background service to poll regularly to obtain data, and use itSystem.Timers.TimerTimer polling, adding additional Monitor code to prevent repeated execution at the same time, although it meets my business needs, is not elegant enough, and using the new PeriodicTimer timer in .NET 6 can better meet my business needs.

As a developer, you may have used timers in .NET before. There are many types of timers in .NET today, each serving a different purpose. As follows:

  • System.Threading.Timer
  • System.Timers.Timer
  • System.Windows.Forms.Timer
  • System.Web.UI.Timer
  • System.Windows.Threading.DispatcherTimer


A new Timer was introduced in .NET 6 - System.Threading.PeriodicTimer, and the biggest difference compared to the previous Timers is that the event handling of the new PeriodicTimer can be used in a more convenient asynchronous way, eliminating the mechanism of using callbacks and reducing the complexity of use.

.NET 6 introduced a new timer type called PeriodicTimer. The main purpose behind PeriodicTimer is to avoid using callbacks.Avoiding callbacks saves us from dealing with memory leaks that can occur in long-term operations, and we can write async code instead of sync over async to use that method in callbacks. You may be dealing with the current timer typeAnother problem is the overlapping callbacks。 If you don't write code for callback overlap scenarios, you may see unexpected behavior in your application.

createPeriodicTimerThe instance is very simple, the only parameter you need to provide is the period value, the code is as follows:

Asynchronous Timing Background Task Code:

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