Understanding Event Sourcing

Event sourcing is a powerful pattern where we store all changes to application state as a sequence of events. Instead of just tracking the current state, we maintain a complete history of how that state was achieved.

Try Interactive Demo

Event Store

All changes are stored as immutable events, providing a complete audit trail of every state change.

State Rebuilding

Current state can be reconstructed by replaying events in the order they occurred.

Time Travel

View system state at any point in time by replaying events up to that moment.