Git in one Image

by Jannik Arndt

I tried to create a single image that contains all the most important git commands:

The source code is available at and is licensed under a Creative Commons Attribution 4.0 International License.

Creative Commons License


This example show how to write a reactive reader for the AWS Simple Queue Service, using Scala and alpakka (respective akka streams).

While the Akka documentation is incredibly well written, it has surprisingly few images. Since I visualize concepts to remember them, here is my take on how Event Sourcing in Akka Persistence works:

Changing the password for a PostgreSQL database user involves two steps: The change in the database and the change in the application code. This blog post describes how to do this without any downtime or failed authentication tries.