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HomeHomeArchived Discus...Archived Discus...Developing Under Previous Versions of .NETDeveloping Under Previous Versions of .NETASP.Net 2.0ASP.Net 2.0ASP.NET 2.0 Caching featuresASP.NET 2.0 Caching features
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12/8/2006 3:11 PM
 
J.O.


Joined: 3/2/2006
Posts: 223

Hi,

I have seen two videos on how caching can work on SQL2005 database with commandNotification and a different approach for the webserver with output caching to pages, controls and partial pages, etc. I am mostly interested in the sqldependency caching for the database. It seems very fast and detects automatically that the database data has been changed. Thus reducing the amount of database calls drastically.

I am trying to implement it to see what the effect on DNN and the SQL database is. Is there somebody else out there also trying this?

At least it requires some core modifications now.

Since this line needs to be added during application start. The DNN caching provider does not allow to do this I have seen in a glance:

Private

System.Data.SqlClient.SqlDependency.Start(ConfigurationManager.ConnectionStrings(

I have modified install.aspx and default.aspx and created a copy of DotNetNuke.Common.Global to be able to put the dependency start in the global.asax.vb

In the default.aspx in the root I have added:

<%

@ OutputCache Duration="20" VaryByParam="*" SqlDependency="CommandNotification" %>

Then I have run next to see if dependancy caching is on.

select name, is_broker_enabled from sys.databases

It was not. So I enabled it:

ALTER DATABASE DNN1 SET ENABLE_BROKER

After enabling the cache dependancy on some tables, I do not see a performance increase

However, the sql profiler still shows a lot of database calls. So I think I did not enable dependancy on the tables. But is there not a way to put dependancies on all tables except the logging, usersonline, and schedulehistory ? These tables are updated every time, so putting there sql dependency does not matter much.

However, I still see the same amount of requests in the profiler. What do I do wrong here? Is there anybody trying to do the same?

Jelle

"SiteSqlServer").ConnectionString) Sub Application_BeginRequest(ByVal sender As Object, ByVal e As EventArgs)
 
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