software development enthousiast
Michiel Overeem is a Lead Software Architect at AFAS (http://dev.afas.nl) and part of the team that is responsible for their future ERP Cloud platform.
He started with the development of the HTML5 frontend, but switched to the .NET backend. Now he is responsible for the CQRS and Event Sourcing implementation, as well as the deployment, management and monitoring services of the platform. Not only does he loves to write code, he also loves to read and write papers. That is why he started a PhD. As a PhD candidate with Utrecht University (as part of the the AMUSE project (https://www.amuse-project.org/), he is also a researcher. The focus of his research is the upgrading of model-driven, cloud-based software.
The Dark Side of Event Sourcing: Managing Data Conversion
Evolving software systems often includes data schema changes, and those cause the need for data conversion. This is no different in event sourced systems.
Converting data between schemas while continuing the operation of the system is a challenge.
In this talk, we will look at the possible conversion operations, the techniques to execute them, and strategies for deployment with zero-downtime.
We will look at the possibilities and the trade-offs for designing and implementing upgrades for event sourced systems.