# Event Sourcing UI State

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

- Skill: `majiayu000/event-sourcing-ui-state` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add majiayu000/event-sourcing-ui-state`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/event-sourcing-ui-state/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/event-sourcing-ui-state

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# 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.