Udi Dahan – The Software Simplist
Enterprise Development Expert & SOA Specialist
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Latest posts
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[Ask Udi] Two services operating on the same entity
Most of my regular readers know that I recommend against having more than one service operating on the same entity, but with the groundswell of interest around microservices, there appear to be more and more people who are falling into this trap, so I thought it worthwhile to do…
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NSBCon 2015 – Dallas Texas
Seeing as it’s been just about a year since the last NSBCon we ran in New York City, I’m happy to say we’re bringing NSBCon back to the US – this time in Dallas Texas, Dec 1-4. Click here for the full details. First – the war stories For those of you who have been […]
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Training still happening
So, about 2.5 years ago I wrote that I would be winding down my training, specifically saying “In any case, I’ll be giving the course 4 more times, and that’ll be it.” Well, that wasn’t it Now, even though I did scale back the training quite a lot – from around 10 public courses…
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Microservices presentation [London 2014]
… in which I realize I shouldn’t put off blogging about the presentations I’ve given. This one is from µCon 2014: The Microservices Conference at Skills Matter in London. The title of this talk was: An Integrated Services Approach and the description: After many years of the…
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Finding Service Boundaries – illustrated in healthcare
A couple of months back I gave a presentation at NDC London about how to find service boundaries, giving examples from the field of healthcare. The recording is now online here. If you want to learn more about these topics, check out more of my posts on SOA here. If you want the…
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Ask me anything – Dec 11
This coming Thursday, Dec 11 I’m going to be doing an “Ask Me Anything”. For those of you who aren’t familiar with the format, an “Ask Me Anything” (or AMA for short) is a kind of online “press conference” which was popularized on Reddit, and has had fairly well-known people do…
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Watch out for superficial invariants
As I was reading a blog post on CQRS, Aggregate Roots, and Invariants here, I became aware of a mistake I’ve seen many developers make over the years and I thought I’d call it out real quick. Superficial Invariants Taken from the blog post mentioned above: “For example, an…
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Best US Supermarket running NServiceBus (for years)
I was quite thrilled when I heard that our customer Wegmans got ranked by Consumer Reports as the #1 supermarket chain in the US. Wegmans have been long-time customers of NServiceBus and I recently got the opportunity to go on a guided tour in their flagship store in Rochester…
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NSBCon London 2014 Wrap-up
Well, NSBCon London was a blast. It was such a blast that it took me this long to recover and get my head back into blogging. In any case, for those of you who couldn’t make it, check out this short 2-min video to get a feel for what it was like: The venue was […]
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Service-Oriented Composition (with video)
When telling people about my approach to SOA, in which a given service would have client/browser-side components running side-by-side in the same process and even in the same page as components from other services, I often get asked this question: “Doesn’t all of this…
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NSBcon Update
Just a quick reminder to let you know that NSBcon London is next week. For those of you who have been wondering, yes, you can come to just one of the days if you aren’t able to take both days off of work. Also, if you want to come but can’t convince your boss to […]
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People, Politics, and the Single Responsibility Principle
In one of Uncle Bob’s recent blog posts on the Single Responsibility Principle he uses the example of using people and organization boundaries as an indication of possible good software boundaries: When you write a software module, you want to make sure that when changes are…
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New York ALT.NET Presentation
I’m going to be in New York in a couple of weeks teaching my Advanced Distributed Systems Design with SOA course and, as I usually do, will be giving a presentation at a local user group – this time at the NY ALT.NET user group on Wednesday May 14 @6:30pm. Just as an aside, I’m…
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NSBcon London 2014
Since my last post announcing NSBcon you probably haven’t gone to take a look at what’s happening. The speaker lineup for NSBcon London 2014 is now complete and we’ve got a really great mix of talks, if I do say so myself. I’ve already mentioned that Oren and Greg will be there,…
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#NoEstimates – Really?
There has been some discussion online recently about the issue of estimates in software development, specifically under a meme called #NoEstimates. This came up when I was in London for the DevWeek conference at the speaker dinner with Austin Bingham, Rob Smallshire, and Allen…
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Announcing the Particular Service Platform
After many months of hinting about the coming of the Particular Service Platform, it’s finally here. For everybody who has been building message-driven systems on .NET – I really do believe that this is the dawn of a new era (and if you know anything at all about me, you know…
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Loosely-coupled orchestration recording now online
When I was in London a couple of weeks ago teaching my SOA class, I gave an evening presentation called Loosely-Coupled Orchestration which talked about some of the challenges people face when introducing more event-driven and asynchronous patterns into their systems – for…
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Code for my Programming in 4D talk
So, I’ve been a bad presenter. I’ve given my Programming in 4D talk already several times and I haven’t yet uploaded the code for it. And seeing as I’m going to be giving it again today (at the DevWeek conference in London), I figured that I should finally get my act together…
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On that Microservices thing
Seems that I’m a bit late to the Microservices party – original article here. But since I’ve been getting repeated requests to weigh in on the topic, I guess I’ll have to risk fanning the flames up again. Also, since quite a few reactions have already been written on the topic…
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and now the ADSD Unconference!
In addition to NSBcon, we’re also going to be running the first ADSD conference in London too – the day before, in fact. Well, it would be more accurate to say the first ADSD UNconference. For the thousand+ people I’ve trained over the past 7 years who have been applying the…