Event Sourcing

This repository is the demonstration of how event-sourcing can be used and implemented.

The project

Imagine you create a platform where people can write/edit message, write/edit comment and like or remove their like on a message.

We do all implementation for the crud part and the event sourcing part so we can see the difference between both.

First implementation

The first implementation is just a basic crud. You create and edit everything directly.

Second implementation

You see that you now grow and need to have a message history, to see what was the message before being edited.

Third implementation

You now need to have also the comments history.

Fourth implementation

You also need to know who liked or removed their like history.

Fifth implementation

Now, you need to refactor the database, since it wasn't readable.