Senior
When does it make sense to use event sourcing?
sobes.tech AI
Answer from AI
Event Sourcing makes sense to use in the following cases:
- Need for complete audit trail of changes: Each change in the system's state is represented as an event. This allows for an exact reconstruction of all actions and states.
- Complex business logic with many side effects: Events clearly separate intentions and their consequences, simplifying debugging and understanding data flow.
- Requirement to implement the CQRS pattern: Event Sourcing works well with CQRS, where commands generate events, and queries read state from optimized read models.
- Requirements for historical data and a "time machine": The ability to replay events allows viewing the system's state at any point in time.
- Need for integration with other event-based systems: Publishing events simplifies integration.
- Requirement for high availability and fault tolerance: The event log is the single source of truth and can be replicated.
It is important to consider that Event Sourcing adds complexity to development and requires a different approach to data modeling and business logic. It is not always the optimal solution for simple CRUD applications.