Oren Eini

aka Ayende Rahien

Oren Eini

CEO of RavenDB

a NoSQL Open Source Document Database

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oren@ravendb.net

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AI Agents, powered by your database - Bring AI into your applications with context, tools, and your data

Jan 22 2009

More information of GC issue

time to read 1 min | 157 words

After a lot more study, it looks like there are two separate issues that are causing the problem here.

During AppDomain unload, it is permissible for the GC to collect reachable objects. I am fine with that and I certainly agree that this makes sense.
Application_End occurs concurrently with the AppDomain unload.

Looking at the docs (and there are surprisingly few about this), it seems like 1 is expected, but 2 is a bug. The docs state:

Application_End - Called once per lifetime of the application before the application is unloaded.

It may be my English, but to me before doesn’t suggest at the same time as.

So I do believe it is a bug in the framework, but not in the GC, it is in the shutdown code for ASP.Net. This is still a very nasty problem.

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