endpoint.tv - New in WCF 4 - System.ServiceModel.Routing

Posted: Aug 07, 2009 at 1:51 PM

By: Ron Jacobs

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7 Comments

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When people ask about new things for WCF in .NET 4 there are several but two of the big ones are discovery and routing. Last time we covered discovery. On this episode we are going to talk about routing. Suppose for example you want to do something simple like create a backup URI for your service in case the primary server is down. Routing can handle this simple case and much much more.

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ibrahim durmus

Aug 14, 2009 at 10:40 PM

Routing service is a canonical instance of the famous saying

"Every problem in computer science can be solved by adding another level of indirection"

http://ibrahimdurmus.com

--id.
metadojo

Aug 30, 2009 at 11:28 AM

routing samples?routing training kit? thanks
masnider

Jan 06, 2010 at 10:00 AM

Beta builds of the Routing Service documents are up now publicly. You can find the documentation at http://msdn.microsoft.com/en-us/library/ee517421(VS.100).aspx">http://msdn.microsoft.com/en-us/library/ee517421(VS.100).aspx and the samples are here http://msdn.microsoft.com/en-us/library/dd699773(VS.100).aspx">http://msdn.microsoft.com/en-us/library/dd699773(VS.100).aspx. Comment heavily if you feel like they don't explain things well. I also have started publishing a blog at http://blogs.msdn.com/routingrules/default.aspx.
BurnWithLife

Feb 03, 2010 at 4:21 PM

This does not seem to be the WCF/MSMQ load balancing solution i was hoping for.
masnider

Feb 10, 2010 at 9:23 PM

It's not out of the box, you're right. The main reason why is that the Routing Service is designed to be stateless, and most intelligent load balancing methods rely on some knowledge of "how many messages" or "how much traffic" has been sent a certain direction. While it's possible to build stateless load balancers, it's not immediately apparent how to do this within the Routing Service.

Over at the blog I'm going to be addressing the load balancing question fairly soon. In the meantime, take a look at the "Advanced Filters" sample over on MSDN. One of the advanced filters we build is a Round Robin filter. Note: I don't recommend using this sample, as it has all sorts of issues with locking. In the blog I'll explain why this isn't the best design (it's included in the sample as an example of a custom filter) and give you a better solution (hint: the Routing Service utilizes a MessageFilterTable<IEnumerable<ServiceEndpoint>>).
gurgen

Oct 14, 2010 at 7:45 AM

This does not seem to be the WCF/MSMQ load balancing solution i was hoping for <a href="http://www.online-detox-shop.com/urine-drug-test-detox-drinks-c90/">how to pass a piss test</a>.
gurgen

Oct 14, 2010 at 7:46 AM

what a link in my previous message? that not mine