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IoT im Maschinenbau: die Cloud ist nicht genug

Effizient und sicher in der Connected Factory mit Edge Computing

Cloud-Projekte in Unternehmen haben in den aller meisten Fällen eines gemeinsam: die Verbindung des eigenen, bestehenden Rechenzentrums mit der Cloud – die hybride Connectivity; oft umgesetzt mit VPN oder im Falle von Azure über die Express Route.

ASP.NET Core ModelState Validation Filter

I like my ASP.NET Core controllers and actions very clean and I recommend to not catch all Exceptions inside your Action.

Microsoft Azure CosmosDB Unique Key Policy

If you want to create custom unique keys inside a collections, you can simply create a UniqueKeyPolicy while creating your collection.

What's new in .NET Core, ASP.NET Core and EF Core 2.1

Yesterday the Microsoft Teams have updated their roadmaps of .NET Core, ASP.NET Core and EF Core in focus of the next version 2.1:

ASP.NET Core ModelState Validation Filter

During my code review sessions I see a lot of duplicate for the ModelState validation like

1public async Task<IActionResult> AddAsync(PersonAddSubmitModel model)
2{
3    if(ModelState.IsValid)
4    {
5        return BadRequest(ModelState);
6    }
7
8    // ......
9}

But it makes no sense to use the same code in every action to validate your submit model. It can be easier!

Convert ext4 file system to the new btrfs on a Synology NAS

After five years I decided to replace my Synology DS213air with a new Synology DS718+.

The reasons were:

• More power
• Support to run Docker
• Hardware Encryption

Now, If you want to use Docker on Synology, you have to switch to the new filesystem Btrfs.

Easily update all git submodules

I often use a larger Visual Studio solutions to handle a bunch of simple NuGet projects. And more often I only update references or NuGet packages.

Set up a really cheap build agent to support NPM 5 and Angular 5 in Visual Studio Team Services

Visual Studio Team Services (VSTS) - I will name it just Team Services - is the best and most powerful tool for work items, code repositories, continuous integration and release management at one place.

ASP.NET Core - Using TempData

TempData is next to ViewBag and ViewData a common way to handle data for Requests and Views.

ViewData and ViewBag is only available in the current request and current View. TempData has the functionality to store data from one request to another. Keys inside TempData will be removed if you read them once!

ASP.NET Core 2.0 Upgrade causes HTTP 502

A lot of guys run into an error during the upgrade fom ASP.NET Core 1.x to ASP.NET Core 2.0:

HTTP Error 502.5 - Process Failure

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