Showing posts with label event storming. Show all posts
Showing posts with label event storming. Show all posts


Event Storming workshops from the other side


Some time ago I gave the presentation about DDD and Event Storming during Girls Do IT 2019 conference. I also had occasion to run workshops on the same topic during Programistok 2018 and facilitated a few Event Storming sessions in the past (here is one example). So I can say that I have experience with this very nice modeling and business domain exploration technique proposed by Alberto Brandolini.

However, when I realized that I can take part in Event Storming Workshops organized by Krzysztof Owsiany and Mikołaj Jakubowski I didn't hesitate much to sign in. The workshops had two parts i.e. EventStorming - Big Picture and EventStorming - Design Level. I take part only in the second one while it was more interesting from my perspective.

In the beginning, we finished the Big Picture part and made a quick summary of what was done during the first part of the workshops. Then Krzysztof made an introduction to Design Level Event Storming. To do so he drew such a nice diagram:

Then we divided into 3 teams and started designing a part of a system in more details. Below you can find results of my team.

In the end, we compared designs prepared by all 3 teams. In was interesting to observe the difference between our designs even though we were supposed to design the same functionality.

To sum up I really didn't regret taking part in the workshops! For sure, it was not lost time. It was very valuable to see Event Storming session from the other side and observer how it is facilitated by someone else.

Are you ready to give a chance to Event Storming?

*The pictures in this post comes from own resources and were taken during workshops


Girls Do IT 2019 - DDD and Event Storming



At the end of March I will give a  presentation about DDD (Domain Driven Design) and Event Storming during Girls Do IT conference. Here is a short description:

DDD is a phenomenal approach to software development, which focuses on modeling and developing of a common language (a.k.a. ubiquitous language) used both by business and engineers.

Whereas Event Storming is a technique of modelling and gaining knowledge even of complex business domains, which is more and more popular especially among DDD practitioners. In 2018 it was even placed on the famous ThoughtWorks Technology Radar as the recommended modeling technique.

The aim of the presentation is to share experience and discuss the basics of Event Storming and DDD.


Pod koniec marca w czasie konferencji Girls Do IT przedstawię prezentację na temat DDD (Domain Driven Design) oraz Event Storming'u. Oto krótki opis:

DDD to fenomenalne podejścia do wytwarzania oprogramowania, które kładzie nacisk na modelowanie i wypracowanie wspólnego języka pomiędzy biznesem, a inżynierami.

Event Storming to natomiast technika modelowania i zdobywanie wiedzy nawet na temat bardzo złożonych domen biznesowych, która przebojem weszła na rynek IT, a szczególnie upodobali ją sobie właśnie praktycy DDD. Może wystarczyłoby powiedzieć, że w 2018 roku została umieszczona na słynnym Technology Radar firmy ThoughtWorks jako zalecana technika modelowania.

Celem prezentacji jest omówienie podstawowych zagadnień związanych z Event Storming'iem oraz DDD, a także podzielenie się ze słuchaczami praktycznymi doświadczeniami w tym obszarze.


After Programistok 2018


The time has come to drop a few lines about Promgramistok 2018. This time I didn't give a presentation. Instead, together with my colleague Rafał Maciąg I conducted workshops "Recipe for DDD, BDD, CQRS and Event Sourcing".

About conference

In general I can speak only in superlatives. I'll start by saying that the communication with organizers was simply perfect - I got answer for all my questions almost at no time. We were accommodated in the superb hotel on the market in Białystok. The before party was simply great (old school games, beer and not only, pizza, great people). I almost got touched while I was able to play Pegasus the first time since my childhood. We also didn't have to worry about transport - Do you need a transport to the train station? No problem. Do you need transport to the After Party? No problem... Last but not least the gift bag was delicious ;) I really regret that after workshops I had to go back to Warsaw and I didn't participate in the rest conference.

About workshops

As to the workshops. Despite some technical problems I'm happy with them. What is the most important participants were very active, had questions etc. Thanks! I talked with a few of them during the After Party and it looks like it was ok. Though I'm still waiting for surveys ;)

Our workshops consisted of 3 parts: some theory, Event Storming session and some programming. The first 2 parts went without any obstacles. Well except one minor one. I was asked by organizers what we would need. I told that sticky notes and markers. Unfortunately, this information was lost somewhere so it's good that we took our own equipment. After the first 2 parts we planned to make some coding exercises. To make everything smooth we prepared the sample project and description of tasks.  In the case of problems with Internet we also prepared a zip file with all required nugget packages. Finally, we told participants that they would need VS and Microsoft SQL Server Express installed.

We didn't anticipate only one things i.e. problems with Microsoft SQL Server Express. It's our mistake that at home we tested a sample project but with Microsoft SQL Serve Developer Edition. It turned out that the express edition requires additional actions like changing firewall rules or changing configuration in SQL Server Configuration Manager. We tried to do that but finally we give up in order not to waste too much time.

Live coding

Instead we made a live coding. I was sitting in front of the computer and programming. In the meantime Rafał was explaining details, answering questions etc. On the one hand I have to say sorry that it looked in this way. On the other hand I'm really happy that this unplanned live coding session went so well!

Final thoughts

In the summary I have to say that the next year I will do my best to take part in Programistok again.  The conference was so good that after coming back to Warsaw I decided to call organizers and and tell them this directly. Eliza Kasperuk, Adam Piotrowski, Dawid Kozak and others (that I didn't meet or I didn't remember by name) - Thanks for Programistok!

*The picture at the beginning of the post comes from organizers of Programistok and was taken during "Recipe for DDD, BDD, CQRS and Event Sourcing" workshops.