Frequent ENDAPP

Sylvain C. asked on March 12, 2026 22:11

While looking at my even log, I see that I have many Application_End or ENDAPP, almost every minute.

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What could explain this behaviour. It is working fine on my test website perhaps only 2-3 times a day but it is also receiving much less trafic.

Recent Answers

Juraj Ondrus answered on March 13, 2026 05:06

What are the details of the application end events? It could be that the environment is killing the app. Check also the Windows Event viewer. What are the other events coming from Hosting.Lifetime like?

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Sylvain C. answered on March 13, 2026 19:05 (last edited on March 13, 2026 22:01)

Thank you Juraj for your feedback. I was investigating those points and i had put recycling thresolds which seems to be too low for my ASP.Net core live site (4Gb for virtual and 1.5Gb for private). I removed those thresolds and I am now recycling at fixed times. It is still dropping outside of those hours but much less.

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Laura Frese answered on March 27, 2026 19:36 (last edited on March 27, 2026 20:00)

I've seen this happen on sites in the past that max out the DTUs on azure SQL or run into memory leaks due to poor exception handling. Has your site gone live recently or is this something that has started to happen to a site that has been live for a long time? Where is it hosted? Are there any external processes touching folders on the server?

This could also be tied to your web farm Always transitioning issue

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Sylvain C. answered on March 30, 2026 23:41

Thank you Laura, This site has been live for years now but it has been move to Azure recently which coincides with the begining of those issues. What should be the settings to monitor? IIS settings are the same as before.

Thank you

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Laura Frese answered on March 31, 2026 17:30

Navigate to your SQL Database in the Azure Portal. You should see resource utilization on the dashboard.

Also, double check your web farm in kentico and make sure that it is not always transitioning.

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