Comments on: Request/Response Service Layer: Processing Requests http://davybrion.com/blog/2009/11/requestresponse-service-layer-processing-requests/ inquisitive: adjective. given to inquiry, research, or asking questions; eager for knowledge; intellectually curious Wed, 08 Feb 2012 11:42:42 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Davy Brionhttp://davybrion.com/blog/2009/11/requestresponse-service-layer-processing-requests/comment-page-1/#comment-22931 Davy Brion Wed, 11 Nov 2009 22:11:53 +0000 http://davybrion.com/blog/?p=1799#comment-22931 @Udiah, that definitely looks interesting :) @Udi

ah, that definitely looks interesting :)

]]> By: Udi Dahanhttp://davybrion.com/blog/2009/11/requestresponse-service-layer-processing-requests/comment-page-1/#comment-22929 Udi Dahan Wed, 11 Nov 2009 19:09:06 +0000 http://davybrion.com/blog/?p=1799#comment-22929 We've now integrated a WCF facade into NServiceBus as described <a href="http://www.nservicebus.com/InsteadOfWcf.aspx" rel="nofollow">here</a>. In short, you write a one-liner class and NServiceBus exposes the relevant message over WCF. We’ve now integrated a WCF facade into NServiceBus as described here. In short, you write a one-liner class and NServiceBus exposes the relevant message over WCF.

]]> By: Davy Brionhttp://davybrion.com/blog/2009/11/requestresponse-service-layer-processing-requests/comment-page-1/#comment-22918 Davy Brion Tue, 10 Nov 2009 14:35:01 +0000 http://davybrion.com/blog/?p=1799#comment-22918 @Craigit would definitely be a useful addition to the series if you keep supplying the upcoming posts with other alternative decisions/approaches that you guys used :) @Craig

it would definitely be a useful addition to the series if you keep supplying the upcoming posts with other alternative decisions/approaches that you guys used :)

]]> By: Craig Wilsonhttp://davybrion.com/blog/2009/11/requestresponse-service-layer-processing-requests/comment-page-1/#comment-22917 Craig Wilson Tue, 10 Nov 2009 14:15:38 +0000 http://davybrion.com/blog/?p=1799#comment-22917 Davy, Thanks for the article. We adopted this strategy a little over a year ago and it has been great. One difference is that we don't guarantee a response for every request. Instead, if an exception occurs with an earlier request, we simply abort immediately and the client gets a fault exception. We have a few known types of faults that the dispatcher handles gracefully and other ones that are considered Exceptional. Davy,
Thanks for the article. We adopted this strategy a little over a year ago and it has been great. One difference is that we don’t guarantee a response for every request. Instead, if an exception occurs with an earlier request, we simply abort immediately and the client gets a fault exception. We have a few known types of faults that the dispatcher handles gracefully and other ones that are considered Exceptional.

]]> By: Davy Brionhttp://davybrion.com/blog/2009/11/requestresponse-service-layer-processing-requests/comment-page-1/#comment-22915 Davy Brion Tue, 10 Nov 2009 13:24:02 +0000 http://davybrion.com/blog/?p=1799#comment-22915 yeah, the logging is ugly and could be moved to another place... but as long as i don't see an immediate practical benefit to doing so, i don't see the point in changing it ;)doing it asynchronously isn't really necessary because it really doesn't take up any time yeah, the logging is ugly and could be moved to another place… but as long as i don’t see an immediate practical benefit to doing so, i don’t see the point in changing it ;)

doing it asynchronously isn’t really necessary because it really doesn’t take up any time

]]> By: Awkward Coderhttp://davybrion.com/blog/2009/11/requestresponse-service-layer-processing-requests/comment-page-1/#comment-22914 Awkward Coder Tue, 10 Nov 2009 11:41:17 +0000 http://davybrion.com/blog/?p=1799#comment-22914 Seems a bit of SRP method violation in 'Process' - it's executing the handler as well as evaluating the performance, wouldn't it be better to do the performance analysis asynchronously from an audit log(database table).And if you push the stopwatch into some kind of disposable Audit class you can remove the try\finally...Also if you push the response successful evaluation into the Response object then you can remove a few more lines of code :)I do like it ;) Seems a bit of SRP method violation in ‘Process’ – it’s executing the handler as well as evaluating the performance, wouldn’t it be better to do the performance analysis asynchronously from an audit log(database table).

And if you push the stopwatch into some kind of disposable Audit class you can remove the try\finally…

Also if you push the response successful evaluation into the Response object then you can remove a few more lines of code :)

I do like it ;)

]]> By: Davy Brionhttp://davybrion.com/blog/2009/11/requestresponse-service-layer-processing-requests/comment-page-1/#comment-22913 Davy Brion Tue, 10 Nov 2009 06:59:02 +0000 http://davybrion.com/blog/?p=1799#comment-22913 @Udiyou asked me the <a href="http://davybrion.com/blog/2008/06/batching-wcf-calls/#comment-559" rel="nofollow">same thing</a> when i first posted about this over a year ago and my answer at the time was:"I’ve only seen introductions to it, and while i like it, it’s not always an easy sell to customers… WCF (unfortunately) is"Since then, we have recently started using NServiceBus to communicate between 2 different applications but we don't use it for communication between the client-side and the server-side within the same application/system. For one, it's not possible to send messages through NServiceBus from a Silverlight client and that is something that we simply have to be able to do since most of our front-ends are in Silverlight these days. @Udi

you asked me the same thing when i first posted about this over a year ago and my answer at the time was:

“I’ve only seen introductions to it, and while i like it, it’s not always an easy sell to customers… WCF (unfortunately) is”

Since then, we have recently started using NServiceBus to communicate between 2 different applications but we don’t use it for communication between the client-side and the server-side within the same application/system. For one, it’s not possible to send messages through NServiceBus from a Silverlight client and that is something that we simply have to be able to do since most of our front-ends are in Silverlight these days.

]]> By: Aaron Fischerhttp://davybrion.com/blog/2009/11/requestresponse-service-layer-processing-requests/comment-page-1/#comment-22912 Aaron Fischer Mon, 09 Nov 2009 20:36:08 +0000 http://davybrion.com/blog/?p=1799#comment-22912 @Udi I would think this is very similar to an MVC framework rather then a bus? @Udi I would think this is very similar to an MVC framework rather then a bus?

]]> By: Udi Dahanhttp://davybrion.com/blog/2009/11/requestresponse-service-layer-processing-requests/comment-page-1/#comment-22911 Udi Dahan Mon, 09 Nov 2009 20:25:57 +0000 http://davybrion.com/blog/?p=1799#comment-22911 Have you had a chance to look at <a href="http://www.NServiceBus.com" rel="nofollow">NServiceBus</a>? It's an open source framework that does a lot of things you're describing. Have you had a chance to look at NServiceBus?
It’s an open source framework that does a lot of things you’re describing.

]]>