1. What is a Model? - Event Sourcery

What is a model? Why is the word 'model' used so often in software development?
Event Sourcery is a video course created by Shawn McCool that covers the fundamentals of reactive systems and event sourcing, both theoretical and practical. The course combines carefully produced video lectures and real source code examples to show how the ideas translate into working code.
The code is written in PHP by a polyglot developer and developers familiar with C#, Java, and other similar programming languages will feel at home.
Download the code examples here: drive.google.c...