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In the post below I am going to run down a short-list of some of the less-popular performance tips and the reasoning behind them. There are loads of blog postings and articles on asp.net performance enhancements, and I urge you to check those out as well. Onto the good stuff...

Session.ReadWrite versus Session.ReadOnly

It goes without saying that using the Session object will incur some performance overhead so if possible it should be turned off in the web.config.
That said, If you're using the Session object to maintain session in your application...
Ensure Session.ReadOnly is true rather than using Session.ReadWrite across the application. There is more information in the link below, however the short story is there is no ReadWriterLock done if Session.ReadOnly = true. From this MSDN link, "ReaderWriterLock allows multiple threads to read a resource concurrently, but requires a thread to wait for an exclusive lock in order to write to the resource." This will make a fairly significant difference if sessions are being managed in a state database, in which case only one-trip to the database is made when using ReadOnly, rather than two while using ReadWrite...which leads me to...



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this is just a small excerpt from the article, to access the full article please click in the link below:

http://geekswithblogs.net/SanjayU/archive/2008/12/30/asp.net-performan...




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