---
name: event-sourcing-ui-state
description: Use event sourcing to build auditable, replayable UI state systems compatible with concurrent rendering.
---

# Event Sourcing for UI State (React 18)

## Summary

Use event sourcing to build auditable, replayable UI state systems compatible with concurrent rendering.

## Key Capabilities

- Model UI state transitions as append-only event logs.
- Support replay and time-travel debugging at scale.
- Maintain consistency under concurrent updates.

## PhD-Level Challenges

- Prove convergence of event streams under concurrency.
- Design compaction strategies for long-lived logs.
- Analyze storage/performance trade-offs for event sourcing.

## Acceptance Criteria

- Provide a replayable UI event log implementation.
- Demonstrate time-travel debugging with deterministic results.
- Document compaction and retention policies.