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  • Blog Post: The Emissary Design Pattern and RIAs (Rich Internet Applications)

    Here is a first draft of a new presentation. I gave it a couple of months ago just after TechEd and thought I would share it as I try to write up some of my thoughts on RIAs. I plan to rework this a bit more and present it again at TechEd Europe. The talk is titled: "The Emissary Design Pattern and RIAs...
  • Blog Post: Controllers and Doers

    First of all, I've put off writing this for a while since I wanted a term for "controllers" that does not feel pejorative. I really mean this characteristic in a healthy and natural fashion! So, it's my belief that the people working in IT fall into two broad categories (with occasional cross-over...
  • Blog Post: PDF version of the slides for "The Irresistible Forces Meet the Movable Objects"

    Some friends of mine told me that they don't have Powerpoint 2007 (gasp!) and so it was impossible for them to see this talk. The original blog entry (with PPTX file and abstract) is http://blogs.msdn.com/pathelland/archive/2007/11/25/the-irresistible-forces-meet-the-movable-objects-closing-general...
  • Blog Post: Durability Is in the Eye of the Beholder

    So, I occasionally ponder the D in ACID transactions and wonder what it REALLY means. Observation #1: Committed Subject To... When I was working at Tandem in the 1980s, we had a complex (and fascinating) multiprocessor system with dual-ported disk drives, dual-ported IO controllers, multiple (2 to 16...
  • Blog Post: "The Irresistible Forces Meet the Movable Objects" -- Closing General Session at TechEd EMEA in Barcelona

    The big presentation for me at TechEd was the closing general session. I did an entirely new talk called " The Irresistible Forces Meet the Movable Objects ". This talk was a LOT of work and a LOT of fun!!! I had prepared a 30 minute version for the HPTS workshop and enjoyed the practice that this...
  • Blog Post: Presentation of "Data on the Inside versus Data on the Outside" at TechEd EMEA at Barcelona

    On Wednesday, November 7th, I presented " Data on the Inside versus Data on the Outside " at TechEd. While this talk is now over two years old, it is still one of my favorites in spite of the fact that I have crammed too many slides into the session (80 slides into a 75 minute talk). It was a lot of...
  • Blog Post: Presentation of "Life Beyond Distributed Transactions: an Apostate's Opinion" at TechEd EMEA at Barcelona.

    On Tuesday, November 6th, I presented " Life Beyond Distributed Transactions: an Apostate's Opinion " at TechEd EMEA at Barcelona. Unlike most of my presentations, this one had only 45 slides for a 75 minute session and so I went slower and we had time for some Q&A at the end. Perhaps, I should...
  • Blog Post: Presentation of "Metropolis: Interchangeability of Operations" at TechEd EMEA in Barcelona

    On Monday, November 5th, I presented a talk I had written before leaving Microsoft. The first session ARC201 was entitled " Metropolis:Interchangeability of Operations " and the abstract and powerpoint deck are attached. Three more talks coming! It was a LOT of fun and I enjoyed the crowd immensely...
  • Blog Post: HPTS - High Performance Transaction Systems Workshop

    Every two years since 1985, I have gone to the Asilomar Conference Center in Pacific Grove, California for a very special three day gathering. The HPTS Workshop was started by a number of old-time transaction processing folks including Dieter Gawlick, Andreas Reuter, and Jim Gray. In 1985, I was a wet...
  • Blog Post: Every Noun Can Be Verbed...

    As I watch the REST versus non-REST discussion, it occurs to me that there are a number of aspects to the debate. While I am not attempting to address all of these aspects, I think that part of the discussion revolves around DATA versus BEHAVIOR. When people talk about CRUD (Create, Read, Update,...
  • Blog Post: SOA and Newton's Universe

    Bill de hOra and my old friend (from our Amazon days) Mike Dierken commented on my use of SOA versus "distributed systems". There was also an interest in my perspective on the CAP Conjecture . Let me spew forth some thoughts... It may be a bit unusual, but my way of thinking of "distributed systems"...
  • Blog Post: Link to "Life Beyond Distributed Transactions: an Apostate's Opinion

    My friend Harry Pierson points out that I am blogging-challenged and didn't include the links to my paper and talk. This talk and paper were given at CIDR (Conference on Innovative Database Research) on Jan 8th, 2007. Thanks, Harry! - Pat
  • Blog Post: Memories, Guesses, and Apologies

    Well, here I am blogging on the bus with my newly installed Windows Live Writer!!! This blog is a text version of a five minute "Gong Show" presentation I did at CIDR (Conference on Innovative Database Research) on Jan 8,2007. All computing can be considered as: "Memories, Guesses, and Apologies". This...
  • Blog Post: Why I hate the phrase "Long Running Transactions"...

    I always talk about "Long Running Work" and steadfastly avoid "Long Running Transactions"... My preference is to use the word "transaction" to mean an atomic operation that occurs at a single service within a second or so. I mean the ACID ( A tomic C onsistent I solated D urable) transactions that usually...
  • Blog Post: Upcoming talks at TechEd EMEA in Amsterdam...

    Sorry about the long delay in blogging... I was supposed to present at TechEd SanDiego a few weeks ago but my mother passed away on May 19th... We will all miss her, especially my 84 year old father who is quite lonely now... I wanted to tell everyone that I am working on getting a website going...
  • Blog Post: Metropolis Article on MSDN...

    Sorry for the long quiet... family medical stuff... lots of travel... lots of excuses... I'll try to do better... Looks like I got an MSDN front page for an article I wrote that was published in Journal a few weeks ago. I got asked to post the following ad for JOURNAL: “The new homepage...
  • Blog Post: Wow! Lots of commentary (mostly on the Night Sky post).

    I have had an amazing amount of commentary to get back to people on... At first, I was traveling and then busy with family stuff... then I looked and there were a lot of good (and some very long) discussions that had arisen. I am only part way through creating detailed answers for these but I thought...
  • Blog Post: Comments on JohnCJ's comments of 3/26/04

    One of the blog comments I received was: re: More Discussion of SOA is like the Night Sky... 3/26/2004 5:03 PM John Cavnar-Johnson Re: http://blogs.msdn.com/pathelland/archive/2004/03/22/94000.aspx#97068 This was a really cool discussion that I thought was insightful. I wanted to make...
  • Blog Post: More Discussion of SOA is like the Night Sky...

    I received some thoughtful commentary from someone named John and I thought I would share his comments and some of my responses with you all. I’m still trying to get used to Blogging and don’t know how to give better attribution to John than his first name. Here goes: Sender: John ...
  • Blog Post: SOA is like the Night Sky...

    I frequently find that people have a different perspective of computing than I do. When I think about it, I am struck by the independence and separation that different systems (i.e. independent services) have from each other. In many ways, this reminds me of the night sky. Imagine a single service...
  • Blog Post: It's All in a Name: What's a Service?

    I am concerned about how to interpret a “service” and a “system” as differentiated from an application or a hardware node (or Windows “box”). There seems to be no small amount of confusion about the crisp definition of a service. We seem to muddle the destination end...
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