Description: Event Source is a design pattern that captures changes in an application’s state as a sequence of events. This approach allows applications to log and replay events, facilitating auditing, debugging, and data synchronization. Instead of storing the current state of an application, Event Source focuses on storing a series of events that represent state transitions. This provides a richer and more detailed view of how a particular state was reached, which can be invaluable for analysis and decision-making. Additionally, this pattern allows for the reconstruction of the application’s state at any point in time by simply replaying the events from the beginning. Key features of Event Source include the immutability of events, the ability to handle events asynchronously, and the ease of integrating distributed systems. Its relevance lies in its ability to enhance the resilience and scalability of applications, especially in environments where data changes frequently and detailed tracking of user interactions and system changes is required.
