Now that we have explored the Publish-Subscribe pattern, learned what an event is, and talked about event brokers, it is time to explore how to replay the state of an application. To achieve this, we can follow the event sourcing pattern.The idea behind event sourcing is to store a chronological list of events instead of a single entity, where that collection of events becomes the source of truth. That way, every single operation is saved in the right order, helping with concurrency. Moreover, we could replay all of these events to generate an object’s current state in a new application,…