Greg Leake: Stocktrader - Overview

Posted: Feb 09, 2010 at 2:10 PM

By: Charles

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Greg Leake is very passionate about loosely-coupled service-oriented n-tiered application architecture. He has created an impressive service-oriented application called StockTrader. We will be highlighting his great work over the coming days with a four part mini-series on StockTrader. Most of the series will be comprised of demos of StockTrader in action and explanations of what's going on behind the scenes in this truly exemplary example of how to create a powerful client-server application that is based on a loosely-coupled service architecture. Further, the interoperability story here is excellent (one of the great advantages of standards-based protocols...).

This is an architectural overview of Stocktrader. See Greg demo this incredible SOA application here:

Demo Part 1
Demo Part 2
Demo Part 3

From the stocktrader site:

"This application is an end-to-end sample application for .NET Enterprise Application Server technologies. It is a service-oriented application based on Windows Communication Foundation (.NET 3.0) and ASP.NET, and illustrates many of the .NET enterprise development technologies for building highly scalable, rich "enterprise-connected" applications. It is designed as a benchmark kit to illustrate alternative technologies within .NET and their relative performance.

The application offers full interoperability with J2EE and IBM WebSphere's Trade 6.1 sample application. As such, the application offers an excellent opportunity for developers to learn about .NET and building interoperable, service-oriented applications."

Tune in!

This presentation and some other recent channel nine videos seem to me not to work that well because there is a confusion about whether the video is an interview or a presentation. Having some videos that are basically presentations of reasonably complex content is certainly useful. But those kinds of presentations need focus on the presenters words and drawings. They don't need the camera being waved back and forth between a small part of a chart and the presenter's face. They also don't need a steady stream of casual comments from Charles disrupting the thread of the presentation.

I think it would be much better to divide this kind of content into two segments. One would be a formal presentation. The silverlight format used for the Mix07 sessions works very well for this kind of content. The second segment would be an interview by Charles with the presenter that was focused on a discussion of some of the implications of and plans for the project.

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dnjake

Aug 20, 2007 at 2:26 PM quote reply

This presentation and some other recent channel nine videos seem to me not to work that well because there is a confusion about whether the video is an interview or a presentation. Having some videos that are basically presentations of reasonably complex content is certainly useful. But those kinds of presentations need focus on the presenters words and drawings. They don't need the camera being waved back and forth between a small part of a chart and the presenter's face. They also don't need a steady stream of casual comments from Charles disrupting the thread of the presentation.

I think it would be much better to divide this kind of content into two segments. One would be a formal presentation. The silverlight format used for the Mix07 sessions works very well for this kind of content. The second segment would be an interview by Charles with the presenter that was focused on a discussion of some of the implications of and plans for the project.
Charles Welcome Change

Aug 20, 2007 at 3:59 PM quote reply

Thanks for the feedback. Keep in mind that Channel 9 interviews are conversations that happen and they are filmed that way. This was not a pre-planned presentation by Greg (if it was, I would have had somebody else film it (which is distinct from having a conversation)). Not sure I agree that asking questions is a form of disruption, but then again I don't film presentations.

Again, thanks for the feedback. Greg is planning on doing some Screencasts to demo this stuff, which will be a great way to learn more about it in a non-conversational context.

The next set of videos are of me filming Greg demo this in his lab. That said, I do ask questions and we occasionally communicate like normal humans do.

Keep on posting,
C
Cyonix Me

Aug 20, 2007 at 7:57 PM quote reply

I like the feeling of a conversation, after all that is what C9 is all about.

I have been writing something similar to this application, it’s given me some great ideas, can't wait for the next video.
gaurav.net

Aug 21, 2007 at 6:37 AM quote reply

Ya surley i like the communication way too....this is what i like about channel 9 & it demonstrates the human aspect of how the apps or technologies are being made....

As Charlie pointed Screencasts really give u proper study feel ....
I enjoy watching them too...
bobbyorr

Aug 21, 2007 at 8:18 AM quote reply

I also like the conversational feel. I like seeing people in party mode, seeing several mice on a cluttered desk, seeing two or three monitors, seeing the spontaneous version of how the interviewee would really draw their thoughts on the board in "real life." It makes me feel like I have visited and imbibed some of the air there.

It would be nice if the videos were indexed, such that I could come back later and pick up where I left off.
JonnyRocks

Aug 21, 2007 at 10:31 AM quote reply

Charles,

What you guys do is great. The purpose of channel 9 is to be informal. "Listening to the pilots" I love the feeling of I just walked into Greg's office and said hey buddy whats up and we hung out and talked about cool stuff. Keep the spirit alive we love it.

Jonathan
sokhaty

Aug 21, 2007 at 2:53 PM quote reply

Nice video, too bad Greg avoided the subject of horizontal scaling of the "RDBMS" layer. As the "RDBMS" here is actually an integral and a very critical part of any more or less decent application these days, it would be nice to know how guys at Microsoft are planning to address that.
Oracle at least claims that their RAC (real application cluster) scales horizontally.
MS SQL Server does not even seem to have a similar concept neither in 2005, nor 2008 incarnation.
SACoder

Aug 22, 2007 at 9:45 PM quote reply

You should read up on Federated Databases if you want to find out about a Microsoft approach to horizontally scaling databases.
wannacode

Aug 22, 2007 at 11:15 PM quote reply

Federated databases are not the equivalent of Oracle RAC. They simply spread the content and tend to improve performance. Not create redundancy as was demonstrated at the BSL. An active-active cluster is somewhat similar to RAC.
JohnAskew 9 girl in pink sweater

Aug 31, 2007 at 11:04 AM quote reply

Yep, another excellent loosely-coupled interview.
Cudos, Chuckles.
Parimal

Sep 13, 2007 at 5:35 PM quote reply

Guyz, where is the connected part of the video which shows the recording of lab !! Can any one please help me? I gotta check out this video urgently.
Charles Welcome Change

May 08, 2008 at 6:58 PM quote reply

bobbyorr wrote:

I also like the conversational feel. I like seeing people in party mode, seeing several mice on a cluttered desk, seeing two or three monitors, seeing the spontaneous version of how the interviewee would really draw their thoughts on the board in "real life." It makes me feel like I have visited and imbibed some of the air there.

It would be nice if the videos were indexed, such that I could come back later and pick up where I left off.

Indeed. I must agree.
C
zubairdotnet

Jun 23, 2008 at 3:46 AM quote reply

What happened to part 2,3 and 4, can't seem to find the links to them and all Google links lead to this page, looks like you have to update your demo after StockTrader 2.0 is released ?

I've downloaded ST 2.0 but I need to watch the demos and get the hang of it before attempting to play with it, please upload/update.

Thanks

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