Alexander Zeitler

Photo by Yannick Pulver on Unsplash Recently I came across this tweet: Writing is not a result of thinking.

express-validator is a powerful validation and sanitation library.

I tried to setup an AWS Cognito user pool supporting OAuth 2.0 client credential flow using AWS CDK.

AWS CDK is leveraging AWS CloudFormation to deploy Stacks in AWS.

Let's consider you're using local domains in development and want access them from Android virtual devices using the Android emulator?

The other day I wanted browser-sync to include my changes made to tailwind.config.js or tailwind.css without manually restarting browser-sync after my output.css has been generated.

The other day I had the idea to store some JSON as a AWS Parameter Store value.

After doing no ASP.NET (Core) stuff for while, today I created an ASP.NET Core MVC 3.0 application using dotnet new mvc.

Photo by Patryk Grądys on Unsplash A few weeks ago I had my tenth Twitter anniversary.

DigitalOcean recently announced the public availability of it's managed Kubernetes offering and it's pretty awesome.

ASP.NET Core provides the concept of View components and the intro from the official docs reads quite straight forward: View components are similar to partial views, but they're much more powerful.

There are a ton of managed Kubernetes services available today (and for sure even more tomorrow) to run your ASP.NET Core application.

CQRS and Event Sourcing have been there for a while now but especially in 2017 and the first months of 2018 we can see a rapid growth of inquires for CQRS based applications — why is this?

Please consider the following scenario: On my MacBook Pro I want to access a web application (SPA/PWA) and an API both running in Docker containers behind another nginx Docker container (reverse proxy managing SSL) from an iOS device.

Since version 58, Chrome requires SSL certificates to use SAN (Subject Alternative Name) instead of the popular Common Name (CN), thus CN support has been removed.

Azure Resource Manager allows you to deploy, manage, and monitor all of the resources for your solution as a group, rather than handling these resources individually.

Mongoose supports two Schema options to transform Objects after querying MongoDb: toObject and toJSON.

TL;DR: While boring looking XFCE installation on Ubuntu Server is shown everywhere, this post shows you how to get a nice Mate Desktop on Ubuntu in Azure up and running and RDP into it.

TL;DR: If you don't want to find out the solution by running over 40 Ubuntu installations with several desktop environments on AWS, read on.

In a current Node.js / Docker customer project I had to debug some mocha tests because Docker containers use UTC and you know: that timezone stuff...

In my development environments, I never install Node.j using apt-get but use nvm instead to be able to use multiple Node.js versions in parallel.

Yesterday I just tried to debug an ES6 Node.js application using Visual Studio Code and noticed that I couldn't remote debug.

After using Docker in development, you might want to put your application into production.

To get all routes registered in express.js, this snippet gets the work done: const routes = []; app.

In order to be able to debug Node.js with TypeScript in a Docker container (or in general: debug remote) using WebStorm, compilerOptions in your tsconfig.json need to contain inlineSources and inlineSourceMap being set to true.

TL;DR There's no alternative to OSS but we need to improve how we're dealing with it.

TL;DR Hard Disk space can only be replaced with more Hard Disk space Disclaimer: If you're doing things wrong described here you'll loose your data - create a backup first!

We're using the Docker eco system now for a while in development and production.

If you're using Chrome on Ubuntu in a VMware Workstation VM it is likely, that it has been crashing after being in the background for a while.

TL;DR It's 2016 and Visual Studio doesn't support us in renaming Projects including files, folders and namespaces.

If you try to start a docker machine using docker-machine start <machinename>, you might receive this error message: Progress state: NS_ERROR_FAILURE VBoxManage: error: Failed to create the host-only adapter VBoxManage: error: VBoxNetAdpCtl: Error while a…

This post will show you how can create a Docker Machine instance on AWS (EC2) starting from scratch.

In ASP.NET 5 bootstrapping a self host test server has changed compared to ASP.NET 4 / Web API.

Setting some context...

With ASP.NET MVC 6 the default output for JSON is still UpperCamelCase.

Update [2015-05-02] As Microsoft has updated it's Dockerfile to support DNX (beta 4 as of this Update), the introduction of this post has become obsolete and you can jump directly over here (in this post).

Working in the IT sector never has offered more choices than nowadays.

When running a ExpressJS based API or Website, you may want to add new routes without restarting your ExpressJS host.

When using a NoSQL database like MongoDb, most of the time you'll have documents that contain all properties by itself.

On a developer machine you might have to install multiple versions of MongoDB or you might want to run multiple MongoDB server instances.

The title of this post might sound a bit scenic, but 2014 indeed has been a year of goodbys for me - at least regarding software development.