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Udi Dahan

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Blog Name: Udi Dahan
Url: http://www.UdiDahan.com/?blog=true
Language: English
Topics: SOA, EDA, DDD
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Popularity: 1 Followers

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Search and Messaging
One question that I get asked about quite a bit with relation to messaging is about search. Isn’t search inherently request/response? Doesn’t it have to return immediately? Wouldn’t messaging in this case hurt our performance? While I tend to put search in the query camp in the when keeping the responsibility of commands and queries separate, and often recommend that those queries be done without messaging, there are certain types of search where messaging does make sense.
MySpace Architecture Considered Expensive
I just finished listening to the Microsoft presentation on how they use the Concurrency & Coordination Runtime (CCR) in MySpace (the stated largest web site running .NET). Some interesting numbers were stated in the talk. Tens of thousands to hundreds of thousands of requests per second Over 3 thousand web servers Over a thousand mid-tier servers No wonder most big web sites don’t run .NET. The Windows licenses would put them out of business. Well, that is if you follow those sa
[Article] EDA: SOA through the looking glass
My latest article has been published in issue 21 of the Microsoft Architecture Journal: EDA: SOA Through The Looking Glass While event-driven architecture (EDA) is a broadly known topic, both giving up ACID integrity guarantees and introducing eventual consistency make many architects uncomfortable. Yet it is exactly these properties that can direct a
Progressive .NET Wrap-up
So, I’ve gotten back from a most enjoyable couple of days in Sweden where I gave two half-day tutorials, the first being the SOA and UI composition talk I gave at the European Virtual ALT.NET meeting (which you can find online here) and the other on DDD in enterprise apps (the first time I’ve done this talk). I’ve gotten some questions about my DDD presentation there based on Aaron Jensen’s pictures:

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