Welcome!

... to the digital home of Steven Schwenke.

This site is supposed to be a showcase for my thoughts about software engineering, less a personal homepage. If you want to know more about me, invite me to a beer.

Also, have a look at my book "Developer on the Stage".

 
 
 
 

Reloading images in Angular-Templates (img)

01 Jan 2020
Posted by Steven

Working on IT Hub, I recently had to find a way to reload images in this Angular Single Page Application. The new functionality I added allows an administrator to upload one image for each community group, so that each group has a logo. These images are displayed via a simple img tag in the HTML template:

Multiple "waiting for changelog lock" = Liquibase locked your database

26 Dec 2019
Posted by Steven

Some time ago, an application of mine that is deployed in the Pivotal Cloudfoundry began throwing errors and crashed:

Spring Test Slices

22 Dec 2019
Posted by Steven

In this article, I want to share what I learned about testing a Spring application without loading it completely. This can be done by using @DataJpaTest, @WebMvcTest, @SpringBootTest, @AutoConfigureMockMvc and @DataJpaTest. These annotations are part of "test slices" of Spring which allow to test certain beans of the application without loading other beans.

Using innerHTML in Angular to format strings

13 Oct 2019
Posted by Steven

In preparation for the upcoming IT Hub Brunswick Barcamp, I updated the conference page with ideas for talks and speakers. To display the speakers, we are using the PrimeNG Carousel. This component displays content using slide effects. For this component to work, the content has to be defined in the controller, not the HTML template.

Generating TLS certificates using Certbot manual mode and DNS challenge and setup with All-Inkl

08 Oct 2019
Posted by Steven

As the main developer of IT Hub Brunswick, I created a TLS certificate for the domains www.ithubbs.de and ithubbs.de. In this article, I want to describe this process - mainly for future-me to be able to repeat this in the future. This is not an article about understanding the concepts in detail, it's just an overview.

lessons learned + News in July 2019

03 Aug 2019
Posted by Steven

This is what I learned in June and July 2019:

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