Summary
In this chapter, we explored the challenges and strategies for managing the evolution of events in event-sourced systems. Event versioning is an unavoidable aspect of maintaining the integrity and adaptability of modern software architecture. By addressing the immutability of events and the coexistence of old and new formats, you’ve learned how to ensure your system remains flexible and functional over time.
The skills you’ve gained in this chapter include the following:
- Understanding event immutability and its implications on system design and versioning strategies
- Implementing simple event versioning techniques, such as creating versioned event classes
- Utilizing advanced strategies such as upcasting, weak schemas, and content negotiation for event schema evolution
- Exploring copy-replace approaches for managing large-scale event transformations
- Planning for replays and long-term maintainability when designing versioning...
