Mon, 08 Aug 2016 16:35:23 GMT
Hi everyone! In case you missed the live streaming of this interesting webinar, you can still watch it on our YouTube Lagash channel, so just click here to watch the spanish version MS Bot Framework intro (spanish) or the english version here MS Bot Framework Intro (English)
Feel free to comments and like the video on our channel, ask for more or propose topics to discuss. Of course, you can reach me here or by Twitter @andresvettori
Tue, 01 Dec 2015 17:47:00 GMT
Folks from Microsoft Patterns & Practices have finally published the very good "Assessing Data Store Capabilities for Polyglot Solutions" guidance document after A LOT of hard work.
You can find it on GITHUB at https://github.com/mspnp/azure-guidance/blob/master/Polyglot-Solutions.md where you can review it, make comments and contribute if you can.
This guide is quite comprehensive and I'm happy of being part of the review process, along with a lot of other very smart people.
Wed, 04 Nov 2015 18:13:58 GMT
Hello everybody, I'm posting here a link to the slides I have used in my introductory talk about Docker and its integration with Microsoft platform and tools.
Feel free to grab them from here: http://1drv.ms/1iDgHyc
Enjoy! As always, comments are very welcome.
Wed, 14 Oct 2015 18:12:02 GMT
Well, I have the luck of dedicating some time to help in a little spike process here in Microsoft P&P that involves using the new Azure B2B Collaboration service.
While it's a brand new service and still in preview, there is some informaiton and documentation available about how it works and how to use it.
For example, you can start giving these links a look:
Well, as part of the spike we followed the steps described above and found a couple issues, so I'm documenting them now with the hope it helps somebody else.
So, I'll summarize our finding below:
That's all I have for now, will keep an eye on this as this new B2B service does have a very valid scenario and does simplify the process of integrating identity management with an external partner.
PS: Thanks Rohit for your time!
Wed, 14 Oct 2015 16:05:00 GMT
Hi everybody! I'm just posting here a link to view and download the PPT slides I have used for my presentation in the awesome .NETConf UY 2015 conference about cross platform development in .NET with the new Core Clr.
The slides are here: http://1drv.ms/1NcSKJ8
Enjoy and use in any way yoe see fit, as always, comments are most welcome.
Thu, 30 Apr 2015 21:36:00 GMT
Just a quick note to let you know that I'm bringing back to life the SharpHSQL project, my old port (from 2005...) from the Java version of Hypersonic DB v1.4 to fully native C#.
For now it's located in Codeplex at https://sharphsql.codeplex.com/ so feel free to come by and make questions or contribute with anything you can, I'm in the early stages of the new release and the focus will be to get a stable and usable in production library.
Keep you posted!
Thanks and Enjoy!
Fri, 21 Nov 2014 12:42:43 GMT
Yesterday I participated (togheter with Rodolfo Finochietti & Mariano Sánchez) in the free MUG (Microsoft Users Group Argentina) event named "News about Azure and ASP.NET" where we talked about the new ASP.NET v6 stack and Visual Studio 2015, Azure Search and Azure ML and Visual Studio Online.
I just have uploaded the PPT slides for the Azure talk to my personal OneDrive so you can download it directly from here.
I will be publishing a post about those topics soon, stay tuned!
Wed, 12 Dec 2012 15:13:00 GMTHi everyone, if you use the cool MVC4 WebApi you might encounter yourself in a common situation where you need to return a rather large amount of data (most probably from a database) and you want to accomplish two things: Use streaming so the client fetch the data as needed, and that directly correlates to more fetching in the server side (from our database, for example) without consuming large amounts of memory. Leverage the new MVC4 WebApi and .NET 4.5 async/await asynchronous execution model to free ASP.NET Threadpool threads (if possible). So, #1 and #2 are not directly related to each other and we could implement our code fulfilling one or the other, or both. The main point about #1 is that we want our method to immediately return to the caller a stream, and that client side stream be represented by a server side stream that gets written (and its related database fetch) only when needed. In this case we would need some form of "state machine" that keeps running in the server and "knows" what is the next thing to fetch into the output stream when the client ask for more content. This technique is generally called a "continuation" and is nothing new in .NET, in fact using an IEnumerable<> interface and the "yield return" keyword does exactly that, so our first impulse might be to write our WebApi method more or less like this: public IEnumerable
Wed, 24 Oct 2012 14:14:00 GMTThe project I'm working on uses MongoDB for some stuff so I'm creating some documents to help developers speedup the learning curve and also avoid mistakes and help them write clean & reliable code. This is my first version of it, so I'm pretty sure I will be adding more stuff to it, so stay tuned! C# Official driver notes The 10gen official MongoDB driver should always be referenced in projects by using NUGET. Do not manually download and reference assemblies in any project. C# driver quickstart guide: http://www.mongodb.org/display/DOCS/CSharp+Driver+Quickstart Reference links C# Language Center: http://www.mongodb.org/display/DOCS/CSharp+Language+Center MongoDB Server Documentation: http://www.mongodb.org/display/DOCS/Home MongoDB Server Downloads: http://www.mongodb.org/downloads MongoDB client drivers download: http://www.mongodb.org/display/DOCS/Drivers MongoDB Community content: http://www.mongodb.org/display/DOCS/CSharp+Community+Projects Tutorials Tutorial MongoDB con ASP.NET MVC - Ejemplo Práctico (Spanish):http://geeks.ms/blogs/gperez/archive/2011/12/02/tutorial-mongodb-con-asp-net-mvc-ejemplo-pr-225-ctico.aspx MongoDB and C#:http://www.codeproject.com/Articles/87757/MongoDB-and-C C# driver LINQ tutorial:http://www.mongodb.org/display/DOCS/CSharp+Driver+LINQ+Tutorial C# driver reference: http://www.mongodb.org/display/DOCS/CSharp+Driver+Tutorial Safe Mode Connection The C# driver supports two connection modes: safe and unsafe. Safe connection mode (only applies to methods that modify data in a database like Inserts, Deletes and Updates. While the current driver defaults to unsafe mode (safeMode == false) it's recommended to always enable safe mode, and force unsafe mode on specific things we know aren't critical. When safe mode is enabled, the driver internal code calls the MongoDB "getLastError" function to ensure the last operation is completed before returning control the the caller. For more information on using safe mode and their implicancies on performance and data reliability see: http://www.mongodb.org/display/DOCS/getLastError+Command If safe mode is not enabled, all data modification calls to the database are executed asynchronously (fire & forget) without waiting for the result of the operation. This mode could be useful for creating / updating non-critical data like performance counters, usage logging and so on. It's important to know that not using safe mode implies that data loss can occur without any notification to the caller. As with any wait operation, enabling safe mode also implies dealing with timeouts. For more information about C# driver safe mode configuration see: http://www.mongodb.org/display/DOCS/CSharp+getLastError+and+SafeMode The safe mode configuration can be specified at different levels: Connection string: mongodb://hostname/?safe=true Database: when obtaining a database instance using the server.GetDatabase(name, safeMode) method Collection: when obtaining a collection instance using the database.GetCollection(name, safeMode) method Operation: for example, when executing the collection.Insert(document, safeMode) method Some useful SafeMode article: http://stackoverflow.com/questions/4604868/mongodb-c-sharp-safemode-official-driver Exception Handling The driver ensures that an exception will be thrown in case of something going wrong, in case of using safe mode (as said above, when not using safe mode no exception will be thrown no matter what the outcome of the operation is). As explained here https://groups.google.com/forum/?fromgroups#!topic/mongodb-user/mS6jIq5FUiM there is no need to check for any returned value from a driver method inserting data. With updates the situation is similar to any other relational database: if an update command doesn't affect any records, the call will suceed anyway (no exception thrown) and you manually have[...]
Mon, 31 Oct 2011 12:38:00 GMT
Hi Guys, last Friday I was invited to be a speaker in a very nice Software Architecture Event organized by the Argentina Microsoft Users Group.
The event (spanish spoken) was named "Jornada de Arquitectura" (something like "Software Architecture Day") and included the presence of very notable local speakers in the Software Architecture field like: Martín Salías, Diego Gonzalez, Hernán Wilkinson, Diego Fontdevila, Roberto Schatz and, of course, me. If you want more information about the event click here.
The slides and videos for the other presenters should be uploaded in the MUG site shortly and into the Code & Beyond site as well, so check for them in a couple days if interested.
Just for the impacient, I'm uploading my slides here, in Skydrive for your convenience.
Andrés G Vettori, Vmbc, CTO
Thu, 01 Sep 2011 17:53:00 GMT
In my last post I talked about how to register dynamically (at runtime) a WCF instance without the need to have an existing .svc file or something in the configuration file (
In this post, we are going deeper in the "Dynamic" domain and we would like to not only host our service dynamically, but also to create the actual service contracts and service operations (and its metadata to support WSDL generation) dynamically (at runtime).
You might be asking yourself: Why on earth anyone would like to create a WCF service (and contracts with methods) at runtime?
Well, there is a big chance that you never need to do something like this (I have lived without this so far, and our current projects are running in production very well) but we are building the next version of our development platform (the elusive project codename "E2" I talked about in my previous post) and in that context we need a way to generate the API that our "Business Models, Modules and Process" define. Those artifacts are completely created by our Business Analyst users and they don't require ANY CODING at all, so why we would settle for less when talking about the exposed APIs of those things.
In the sample code you can download below there are not one but two different approaches to this:
Both approaches resolve the service metadata creation, the first by creating a class and letting the WCF runtime to generate the service description metadata in the normal way, and the other build and inject this service description metadata from scratch. Both methods works equally well but I tend to preffer the second because generating and loading a dynamic type in the running process (or AppDomain) have the drawback that is difficult to unload those generated Types and replace them with new versions when the business metadata changes (remember that Business Analysts are doing that, and they are free to change anything they need).
Having said that, I know that it would be possible to unload a generated Type by means of custom AppDomains, but is more work and there are security and performance issues associated with this. By using a metadata only approach we eliminate this problems altogether.
So far we resolved the metadata generation part, but the actual execution of those pesky "Business Process" is not mentioned anywhere, and that's because that is the easy part! :)
WCF already provides all the extensibility you need to intercept the execution of ServiceOperations and do wherever you need, and that's exactly what I do in both examples. I have created an "OperationInvoker" class implementing some WCF interfaces (IOperationInvoker and IOperationBehavior for the injection part) so feel free to explore them, but they are pretty simple. When constructing the metadata we inject it into the "OperationDescription" behaviors collection, check the "CreateOperationDescription" method in the "Service5.cs" project file.
Well, enjoy the code and let me know if have any comments.
Source code download from here: DynamicService2.zip
Andrés G Vettori, CTO, VMBC
Mon, 29 Aug 2011 10:50:00 GMTI know... I know... it has been a while since my last post, but I never forgot about it, just having a blast doing some fun things. Well, some of that stuff wasn't really THAT fun, but that's part of being a CTO and always there is room for improvement in some processes and structures in the company, and so... after a lot of hard work, we are now in a much better position to actually start doing some fun stuff.And the fun part has begun, in thre form of a couple new and REALLY interesting and fun projects, where I participate not only as CTO but also I'm fulfilling a role of an Chief Architect as well, overseeing aspects of general architecture from development and infrastructure standpoints, and more important, doing a LOT of research and proof of concepts to hand over to our Architect Team.So, for this new project (let's say, Codename "E2") I'm in charge of researching some stuff, and here I will present the results of one of those topics: dynamic (runtime) registering of WCF services.Before jumping in today's topic, let me talk a little about the other topics I'm researching, just to paint a broader picture and set the stage for future posts. Our E2 project is a little ambitious in some aspects, and it's main motto is "Configurable Dynamic", so we are exploring ways to make this happen and the list of things to explore first are:Dynamic registration of WCF services (today's topic)Dynamic Data Access (ORM without Entities)Dynamic Business Rules (or logic, if you want)Dynamic Business Processes (workflows are a possibility here, but not the only one)Performance of of the above (mainly IIS, ASP.NET, WCF) and how to optimize the platform.Performance techniques to use: caching, profiling, monitoring, etc. Of course there are other topics (like Security, Scalability, Fault Tolerance, etc) but we will advance over those in time. For today's topic, let's explain a little what I'm talking about. For WWCF services there are two ways of let know the runtime environment that we have a Service class and we want to expose it to the world:The plain old .svc file approach: we need a file with .svc extension and this file will contain the Type information needed to activate the service.The new CBA (configuration based activation) approach: this is new in NET4, and therefore is possible to create a WCF service WITHOUT the svc file, using only a section in the web.config file (
Tue, 30 Mar 2010 15:32:00 GMT
The symptom is this: you change some area or iteration in a TFS Project, but the change is not reflected (or updated) in VS or any other TFS Client.
Well, it happens that TFS now has some clever caching mechanisms that need to be updated when you make a change like this, and those changes are propagated by some scheduled jobs TFS is continuously running in the Application Tier.
So, you you get this behavior, please check (and possibly restart) the "Visual Studio Team Foundation Background Job Agent" service. In my case, this service was logging a very odd "Object Reference Not Set" into the Windows Event Log, and a simple restart fixed it.
Hope this is fixed by RTM... (we are using the RC version).
And by the way, if the job agent is broken there are some other things that stops working like email notifications.
Andrés G Vettori, CTO, VMBC
Mon, 14 Dec 2009 22:38:00 GMT
Here I'm posting a short list of cool extensions I found for VS2010, all are published in the Visual Studio Gallery
Reactive Extensions for VS2010http://visualstudiogallery.msdn.microsoft.com/en-us/0791089a-4570-4f21-b5ee-78aba7e80651
Tangible T4 Editor (Template editor for VS2010)http://visualstudiogallery.msdn.microsoft.com/en-us/60297607-5fd4-4da4-97e1-3715e90c1a23
Power Commands for VS2010http://visualstudiogallery.msdn.microsoft.com/en-us/e5f41ad9-4edc-4912-bca3-91147db95b99
Atomlineer Comment Generation for VS2010http://visualstudiogallery.msdn.microsoft.com/en-us/7912CCF4-60B8-4132-BACE-5ACACEB7233B
Goto Definition Extension for VS2010http://visualstudiogallery.msdn.microsoft.com/en-us/4b286b9c-4dd5-416b-b143-e31d36dc622b
Resource Refactoring for VS2010http://visualstudiogallery.msdn.microsoft.com/en-us/39ae29d3-81e1-43d4-9c48-fc9644869d84
TFS PowerTools for VS2010http://visualstudiogallery.msdn.microsoft.com/en-us/0e69a28f-020c-488b-80b3-f4c89a20621d
Andres G Vettori, VMBC, CTO
Tue, 01 Dec 2009 15:15:00 GMT
The Visual Studio WIT tools team has published a very nice post pointing the most common issues with Sharepoint and TFS 2010.
Andres G Vettori, VMBC, CTO
Tue, 01 Dec 2009 12:01:00 GMT
At the PDC 09 Microsoft announced the Release to Manufacturing (RTM) of the Windows Identity Foundation, previously known as "Geneva", "Zermatt" before that, and "IDFX" before that.
Grab the latest bytes from http://msdn.microsoft.com/en-us/evalcenter/dd440951.aspx
Andres G Vettori, VMBC, CTO
Mon, 09 Nov 2009 02:26:00 GMT
Microsoft has released the first version of the Virtual Machine Preparation Tool for Visual Studio Team Lab management 2010. What a mouthfull! Try saying that three times in a row..
Well, the tool function is to prepare existing VMs to be compatible with VS 2010 Lab Management requirements, and believe me, there are a few. Configuring an existing VM by hand is a tedious and VERY error prone task, and so this tool was born.
Download it from http://vslabmgmt.codeplex.com/, this version is prepared to work with VSTS 2010 Beta 2 and Windows Server 2008 X86 SP2 VMs. They will be adding more options as soon they finish testing of different versions (and flavors) of Windows. Perhaps R2 is on the pipeline?
Andres G Vettori, VMBC, CTO
Thu, 05 Nov 2009 15:00:00 GMT
I was trying to build our biggest solution after migration (TEST migration) and found that Silverlight projects won't compile. The first error we received was "The Silverlight 2 SDK is not installed". I found a post on the Silverlight forum about this and managed to fix the error, but then a second error appear:
"The "ValidateXaml" task failed unexpectedly ... System.IO.FileLoadException: Could not load file or assembly 'PresentationCore, Version=220.127.116.11, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047)
According to the people in the Silverlight forum, this is a Silverlight BUG and it won't compile in an x64 environment, so the general workaround is to use an x86 Build Agent.
Fortunately, I found a MUCH BETTER workaround for TFS 2010, wich only involves changing the configuration of the build definition and set the "MSBuild Patform" to "X86" (it was "Auto" before).
After this, my Silverlight projects compile again, even in an x64 Build agent. Nice!
Just for reference, the Silverlight post is here: http://forums.silverlight.net/forums/p/113956/256849.aspx
Andres G Vettori, VMBC, CTO
Thu, 05 Nov 2009 14:48:00 GMT
The test migration of our TFS 2008 went extremely well (the import command processed nearly 7GB of data from our TFS 2008) in less than half hour, and all running in my notebook (not some kickass server...).
Today I executed the script published by Hakan Eskici to upgrate the process template from v4.2 to v5, by simply running a BET file. The process is very simple and fast, and after that we now have the updated process template with all the TFS 2010 goodies enabled.
Check out the process and download the script from http://blogs.msdn.com/hakane/archive/2009/10/19/sample-script-to-enable-new-features-in-upgraded-team-projects-tfs-2010-beta2.aspx
After the upgrade I created a new TASK and found the new "Original estimate" field, and the now separated "Remaining work" and "Completed work", and I almost cryied by the emotion... :)
Also the BUGS have now the new "Repro Steps" and "Test Cases" tabs that are extremely welcome. There also more changes than this (for example the new Test Case WI) so give it a try!
Andres G Vettori, VMBC, CTO
Mon, 02 Nov 2009 13:27:00 GMT
Here I found a good post about how to setup TFS 2010 (and everything else).
TFS 2010 is easier to setup than previous versions, but I cannot say the same for Sharepoint...
Andres G Vettori, VMBC, CTO