Daily Term: Event Sourcing

Event Sourcing

Event Sourcing is a design pattern where the state of an application is derived by replaying a sequence of events, rather than storing the current state directly. Each event represents a state change (e.g., 'OrderPlaced', 'PaymentReceived') and is stored in an event log. This approach provides a full audit trail, enables easy debugging, and supports advanced features like temporal queries or rebuilding state, but it can be challenging to manage event schema evolution and query performance.

Date: 2025-05-19