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POWhat are best practices for using thread local storage in .NET?
 

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  1. POWhat are best practices for using thread local storage in .NET?
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    <p>I have a requirement in my application that I think can be met by using thread local storage, but I'm wondering if it's one of those things that's best to avoid.</p> <p>I have read a few articles on the subject:</p> <p><a href="http://www.dotnetcoders.com/web/Articles/ShowArticle.aspx?article=58" rel="nofollow noreferrer">http://www.dotnetcoders.com/web/Articles/ShowArticle.aspx?article=58</a></p> <p><a href="http://msdn.microsoft.com/en-us/library/system.threadstaticattribute(vs.80).aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/system.threadstaticattribute(vs.80).aspx</a></p> <p>I know <em>how</em> to use it, I'm just wondering if I <em>should</em> use it.</p> <p>Any advice, gotchas to be aware of?</p> <p><strong>[Edit]</strong></p> <p>Here's the use case: </p> <p>I funnel all data access through a few methods that do a lot of logging about each query. One thing I log is a complete dump of the command text with commands filled in so that I can simply copy-paste from my trace logs directly into Sql Management Studio.</p> <p>Way up in global.asax in my web apps I send email to admins with as much information as I can when I get an unhandled exception. I want to put that sql command dump text into this email when I get a SqlException, which will save me the time of digging through trace logs when a page blows up because of a query.</p> <p>I don't want to change the method signatures of my data access classes just so I can pass some reference all the way down the stack, just to get it out when I get an exception. I was thinking maybe TLS would be a good place to put something like "lastsqlcommand", but that's not looking like a viable solution.</p>
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    1. COI've always avoided thread-local storage and found another way to do the same thing. My thought has always been thread-local storage is probably slower than direct access (not sure whether or not this is right). I'd be curious what others think as well.
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