I was at the QCon at San Francisco last week.
If you are not familiar with QCon- it’s very heavily focused on Architecture . It draws an impressive line of speakers and generates an awesome content. Personally, I found it to be a very intense experience. There very many sessions with quite a few keynotes- all crammed to into one tight week.
Following is a summary of  some of the key messages I got from QCon.

1) Culture:

It was amusing how culture came up as a factor or as an impediment or challenge or side affect in almost all conversations – be it in the session or or keynotes or discussion with fellow attendees during breaks
Want to move to Cloud computing ?
Change persistence from RDBMS to NoSQL ?
Continuous delivery ?
Pair Dev and QA ?
For all these changes, you will need to address some sort of cultural transformation in your organization.

2) Conway’s Law
The design of your organization will betray the design of your architecture.

If the interaction between two groups who develop two applications which interact with each other is broken- the integration between the two applications will be flimsy as well.
Simple and astonishingly true. The other manifestations of Conway’s law will appear in other facets like – Do your QA and developers work in silos or is your testing strategy closely bound to your architecture  ?
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This has been a power weekend for me. First the NEJUG presentation on Cloud Computing on Thursday followed by three days of NoFluffJustStuff.OK ! I will admit , on Thursday , I wasn’t sure , if the idea of sacrificing my weekend for a geek tech orgy was the smart thing to do….Anyways…It was too late to do anything about it. So off I went.
Now that its over- so how did I feel about it ?

It’s one of the best things I have done for my professional development in a long time

I am lucky to work for a company where attending such conferences is encouraged and financially supported. I can also say that if I were to loose that backing, I would still probably attend on my own dime.
Why ? Here’s why…

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When it comes to OpenId, Yahoo has some real trust issues. Getting Yahoo to work with OpenId wasn’t  difficult at all. But when I signed-in to Yahoo from my website , this is the message that greeted me

Warning: Yahoo! cannot verify this website. We recommend you do not share any personal information with this website.

For a second, I was scared to signin to my own website !!!

So far, I have tested OpenId with Google, Yahoo, and MyopenId – this is the only provider I have found which is so touchy. (If this is for a good reason, then why don’t others care as well ???)

Anyway- this is how I fixed this…

Basically, you need to provide an XRD document to the OpenId provider. This blog post is an excellent read on this -

http://blog.nerdbank.net/2008/06/why-yahoo-says-your-openid-site.html

Another good resource I found was http://wilkinsonlab.ca/home/node/31

These two resources cover it all, but in case you are looking for grails or Acegi specific advice- following might help.
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