WF4, WCF and AppFabric Sessions @ PDC09

I’m taking this week off to catch up on everything I haven’t done the last two months and to celebrate the Thanksgiving holiday here in the US. PDC was a blast!  It was incredibly awesome to meet so many folks interested in WF and talking with others about how they are using (or plan to…

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Which WF/WCF Talks Should You Attend at PDC?

Just got the email the other day that PDC is less than 4 weeks away, and it got me thinking a bit about how I would think about these sessions as an attendee.  Searching on the PDC site will yield 8 talks tagged with WF.   Here’s how I break some of these these down, the…

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WCF Perf Talk @ PDC (or, the Doctor Teaches Fishing)

I’m probably not going to have too much time to attend talks at PDC, but one talk that would be high on my list is the one that Dr. Allen blogs about here, where he talks about the Zen of WCF Performance and Scale.  I like "Zen" style talks, especially for topics like performance and…

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More Details On WF/WCF in .NET 4.0

Steve Martin, a director of product management for CSD, has a blog post containing more information on the work that we are doing for the next versions of WF and WCF that we will release as a CTP at PDC.  He also introduces "Dublin," the name for our efforts around creating a manageable and scalable…

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Advanced Workflow Service Talk (Demo 4 of 4)

When we start doing this two way style of messaging, we now open up to start modeling some interesting business problems.  In the previous post, you’ll note that I did not include the code, because I mentioned we needed to be more clever in scenarios where we listen in parallel.  First, a brief diversion into…

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Advanced Workflow Services Talk (Demo 3 of 4)

So, we’ve seen in part 1 how to manage context, we saw in part 2 how we can take that basic knowledge to do duplex messaging.  Once we start doing duplex work, there are some interesting patterns, and the first one is one that we like to call "long running work".  Why are we interested…

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Q & A on Advanced Workflow Services talk

Martin posted an interesting question here on my last post: <quote> The first thing that we need to do in order to enable this duplex messaging to occur is that the "client" workflow has to explicitly provide its context token to the service so that the service can address the appropriate instance of the client…

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Advanced Workflow Services Talk (Demo 2 of 4)

A continuation of my series of demos from my advanced workflow services talk.  Here we focus on duplex message exchange patterns. Duplex messaging is something that we model at the application level (as opposed to the infrastructure level) because we want to model that message exchange at the level of the application.  Here’s some scenarios…

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Advanced Workflow Services Talk (Demo 1 of 4)

So, last week I wrapped up a conversation at TechReady, our internal conference, where I was talking about the integration between WF and WCF in .NET 3.5.  This talk was somewhat bittersweet, it’s the last conference where I’m scheduled to talk about WF 3.0/3.5, I’ll start talking about WF 4.0 at PDC this fall.  There…

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Workflows that don’t start with a Receive

A question recently came up on an internal list about how to start a workflow to do some work and then have it accept a message via a Receive activity.  This led to an interesting discussion that provides some insight into how the WorkflowServiceHost instantiates workflows in conjunction with the ContextChannel. Creating a Message Activated…

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