Building Resilient Event-Sourced Systems

Event sourcing is a paradigm where state changes are logged as a sequence of events. Instead of storing just the current state of the data in a domain, we use an append-only store to record the full series of actions taken on that data.

Core Principles

Benefits of Event Sourcing

• Complete audit trail of system changes.
• Ability to reconstruct past states easily.

Event sourcing introduces complexity but ensures data consistency across microservices.

In conclusion, evaluate your domain complexity before adopting event sourcing.