Geek2Geek at Delodi

The last Geek2Geek event was at Delodi in Berlin. This time we talked about Configuration Management Tools. Probably you heard about Chef and Puppet already. We had 2 talks to the new kids on the block. To Ansible and Salt.

A couple weeks ago I pushed out a tweet about Ansible and Frederic responded with an answer. He mentioned that he is using Salt Stack, but he would like to learn more about Ansible. I mentioned that we could do a Geek2Geek event to that topic and if he agrees to do the Salt talk I would do the Ansible talk. And so we did! That’s how I found the topic to this Geek2Geek event 🙂

Frederic just arrived the day before in Germany, coming in from San Francisco. He had a bit jet lag. That’s why he did the first talk about Salt.


Frederic gave us a very good overview about the architecture of Salt. You can find his slides here.

After a short break I did the Ansible talk. The special thing on Ansible is that you don’t have a Master and you don’t need to install a client on the servers. It works via SSH and the configuration is done in Yaml. Here are my slides to Ansible.

The Geek2Geek group was this time a bit smaller than last time. All together I counted 30 people. It was a good round with interesting talks afterwards.


A special thanks to our Sponsors.

Guarana Brause

Guarana Brause sponsored this time the Pizza. Many Thanks for that. Guarana Brause is a powder with natural caffeine. You can mix the powder with water or any other drink. It’s much better than coffee and very popular in the tech scene of Berlin.

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Delodi sponsored the Drinks and of course the space. Delodi is a cool tech company in the heart of Berlin. They build solutions for their clients, mostly with PHP & JavaScript.

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They have a really nice office in Kreuzberg at Oranienstrasse, with a lot of free space. And by the way, they are currently looking for another PHP Senior Developer. if you want to work with smart people, on cool projects in the heart of Berlin you should contact Delodi.

Geek2Geek NoSQL

Last Friday we met again for the Geek2Geek event in Berlin. The theme this time was NoSQL. 40 people RSVPd on and 42 joint actually the event. Not bad for a Friday night 🙂


Jan Lehnardt gave the first talk about CouchDB. A database that uses JSON for documents, JavaScript for Map and Reduce queries, and regular HTTP for an API.


Jan is one of the core comitters of the CouchDB project and knows the database in and out. Jan gave us a very entertaining overview about the features of CouchDB 🙂


Stefan Plantikow made the 2nd talk about Neo4J, a graph database written in Java and Scala.  Stefan is one of the core comitters of the project.


He is a brave guy, because he did a live demo. Thanks God the internet was working and Maven could download all dependencies without any errors 🙂


Stefan showed us the new features in version 2.0 of Neo4J and he even talked about new and not yet presented features in version 2.1.

The 3rd talk was by Martin Schoener about ArangoDB, a multi-purpose, multi-model, non-relational, open source database. Martin is the chief architect at the ArangoDB project.


Beside ArangoDB he talked also about the other database systems and he showed us a very interesting landscape of dbs, which caused quiet some active discussions.


The event was a lot of fun with all this great people. After the talks we moved to a pizza shop around the corner, where we stayed until midnight. We talked for a couple hours about databases and languages.



Pizza and Drinks have been sponsored by 2 awesome companies. Many Thanks for that.


Locafox is a young StartUp from Berlin. They work on a real-time online/offline solution for retail. It’s a young team in the middle of Berlin and currently they are hiring. Check out the positions here:



TempoDB is a young database StartUp from Chicago. TempoDB is purpose-built to store & analyze time series data from sensors, smart meters, servers & more. If you want to join the team send an email to

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Many Thanks again to our great sponsors. Many Thanks for the Pizza & Beer.