I attended an event modeling workshop a few weeks back and learned quite a lot during the sessions. So this weekend, I decided to put some of that into practice. One of the takeaways from my previous practice session was that I thought the front end was going to be something I would have to… Continue reading Another Weekend, Another Event Model
Category: learning
Event Modeling + AI: A Weekend Project That Actually Worked
I've been studying event modeling for almost a year and only now it has started to click. Not just from reading articles or watching talks but from actually modeling simple hobby projects. I thought I'd spend yesterday starting another one. The Project The idea is straightforward: register an occasion reminder (birthday, anniversary, whatever), and one… Continue reading Event Modeling + AI: A Weekend Project That Actually Worked
Initial thoughts post the event modeling workshop
I attended the first ever event modeling conference in Munich this week, hosted by Martin Dilger. You can find out more about the event here:https://www.linkedin.com/feed/update/urn:li:activity:7382309099826221056/ I got into event modeling because I was looking into the various tools available for visualizing requirements that's understandable by both business and development. I had been looking at Event… Continue reading Initial thoughts post the event modeling workshop
Modeling a shipping cost calculator using Template and Strategy design patterns
I wanted to make a simple application of how an event stormed model could be possibly taken into implementation. I took inspiration from a previous industry I worked in because logistics is really one of those good domains where there is lots of options for interesting modeling. The scenario I selected is an MVP for… Continue reading Modeling a shipping cost calculator using Template and Strategy design patterns
Implementing a Raffle System using event modeling and event sourcing
A few weeks ago, I wanted to try out the process of event modeling for designing and then building a simple application. I had picked a simplified raffle application and ended up drawing out the following features: ✅Create a raffle ⏹️View available tickets ✅Sell ticket ⏹️View entrants ✅Pick Random winner ⏹️View winners I had decided… Continue reading Implementing a Raffle System using event modeling and event sourcing
Bugs with Misleading Messages
Are probably the worst. I was getting the following error message when trying to upload to Azure Blob Storage but only for some of the documents we were syncing. ExceptionType: Azure.RequestFailedException Exception: Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature. RequestId:bd3ea564-c01e-006e-5101-bb0104000000 Time:2025-05-02T01:26:31.8311894Z Status: 403… Continue reading Bugs with Misleading Messages
Persisting changes as Events
Now we have implemented the persistence of our domain and read models, we can start to revisit the implementation so that we can switch over to an event-sourced domain model instead. We need a way to store and retrieve new events so I have added a private property and exposed a read-only collection as well… Continue reading Persisting changes as Events
Implementing persistence and setting up integration tests along the way
So far, we've used fake repositories in our tests, now it's time to have an actual implementation of how we want to persist our data. The goal is to be able to add entries when our application is running, and even if the application restarts, it should still have this data. In order to be… Continue reading Implementing persistence and setting up integration tests along the way
Teach Your (Domain) Models How to Fish (And Scale)
"Give a man a fish and you feed him for a day. Teach him how to fish and you feed him for a lifetime" I feel like we developers have an opportunity to really take this quote to heart. As developers we like giving computers instructions. We retrieve an object that we want to update,… Continue reading Teach Your (Domain) Models How to Fish (And Scale)
TDD of the Domain Model, building a registration app
In the last post we did a TDD walk through building the application but we didn't really get into the event sourcing side of things, which was the original intent of this series. I only recently read about Event Sourcing through the book Understanding Eventsourcing by Martin Dilger. It goes into a lot of detail,… Continue reading TDD of the Domain Model, building a registration app
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