Event Sourcing
Event Sourcing is a software design pattern that focuses on storing the state of an application as a sequence of events. Instead of saving just the current state, it records every change that occurs, allowing developers to reconstruct the state at any point in time by replaying these events. This approach provides a complete history of changes, making it easier to understand how the application reached its current state.
By using Event Sourcing, applications can achieve better auditability and traceability. It also enables features like time travel, where developers can view past states or debug issues by examining the sequence of events. This pattern is often used in conjunction with CQRS (Command Query Responsibility Segregation) to separate read and write operations for improved performance.