C#13 params collection performance benchmark

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 Microsoft released the latest version of C# i.e. C#13 and now it allows params to be any of the collections supported by collection expressions rather than just arrays. So, I quickly wrote the benchmark code to test the performance and overall, it did improve the performance. public class ParamsBenchmark{ // Dummy methods to illustrate the params collections public int SumOld(params int[] numbers) { var sum = 0; foreach (var num in numbers) { sum += num; } return sum; } public int SumNew(params Span<int> numbers) { int sum = 0; foreach (var num in numbers) { sum += num; } return sum; } [Benchmark] public int SumOldParams() { return SumOld(1, 2, 3, 4, 5); } [Benchmark] public int SumNewParams() { return SumNew([1, 2, 3, 4, 5]); } } Below are my benchmark results:
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Deploying Asp.net Core Background Service on IIS

The main purpose of having Background Service within Asp.Net core web api is to make sure that once we start the application pool than Background Service should start immediately.

But in general the design of IIS is such that unless you receive the first request worker process is never started and hence background service won't start automatically.

So basically to achieve that we need to do some config changes on IIS which will help to start the background service automatically.

Below are the steps:

  • Firstly we need to make sure that "Application Initialization" is installed. If not you can add it via "Add Roles and Features Wizard". Once installed make sure you restart you server.


  • Deploy your Asp.Net Core Web Api which has Background Service implemented.
  • Go to "Application Pools" in IIS and select the corresponding application pool.
  • Right Click on it and select "Advanced Settings" and you will see the below screen.

  • Make sure the "Start Mode" is "Always Running".

  • And "Idle Time-out (minutes)" as 0.
  • And lastly most important step is to make sure "Anonymous Authentication" is Enabled.




Without enabling the Anonymous Authentication, your service will never start on it own. Basically from my understanding, once you start the App pool it will try to send the request and for that we need the Anonymous Authentication to be enabled.

And it was bit surprising that no one has mentioned the last step anywhere in the community.

Anyways, I hope it will be helpful. 

Happy Coding.

Location: Hong Kong

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C#13 params collection performance benchmark

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 Microsoft released the latest version of C# i.e. C#13 and now it allows params to be any of the collections supported by collection expressions rather than just arrays. So, I quickly wrote the benchmark code to test the performance and overall, it did improve the performance. public class ParamsBenchmark{ // Dummy methods to illustrate the params collections public int SumOld(params int[] numbers) { var sum = 0; foreach (var num in numbers) { sum += num; } return sum; } public int SumNew(params Span<int> numbers) { int sum = 0; foreach (var num in numbers) { sum += num; } return sum; } [Benchmark] public int SumOldParams() { return SumOld(1, 2, 3, 4, 5); } [Benchmark] public int SumNewParams() { return SumNew([1, 2, 3, 4, 5]); } } Below are my benchmark results:
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