# Changelog

## 0.4.0 - 2026-07-17

### Added

- 容量动态调整、故障域排除、区域隔离与可恢复的迁移 wave 检查点。
- 1k、10k、100k 三档确定性扩缩容基准输出。

## 0.3.0 - 2026-07-17

### Added

- 容量约束批量放置：主副本预算、确定性准入、拒绝键和机器可读审计报告。
- 可直接运行的四区域容量场景，以及容量/拒绝/确定性回归测试。

### Changed

- CI 增加格式、无告警检查和测试、公开接口生成差异门禁，并保留四后端矩阵。
- README 明确工具链兼容的等价验收命令和容量规划使用边界。

## 0.2.0 - 2026-07-06

### Added

- Five-phase safe migration workflow generation.
- Deterministic migration waves with global and per-node budgets.
- Blocked-key reporting when no readable migration source exists.
- Safety validation for phase order, wave indexes, and pressure limits.
- Stable JSON output, CLI evidence, and a 10,000-key workflow benchmark.
- Cross-backend regression tests for ordering, budgets, blocking, and determinism.

## 0.1.0 - 2026-07-06

### Added

- Initial project structure, architecture, and roadmap.
- Stable cross-backend hash and placement score primitives.
- Node topology, placement, migration, and distribution report models.
- Weighted virtual-node consistent hash ring with distinct replica lookup.
- Integer-ticket weighted rendezvous ranking and placement namespaces.
- Topology-aware replica placement with graceful constraint fallback.
- Snapshot migration plans with primary, replica, and movement evidence.
- Distribution load, skew, completeness, zone, and rack analysis.
- Stable JSON output for placement, migration, and distribution reports.
- CLI demonstration for placement, distribution, and node expansion planning.
- Deterministic 10,000-key distribution and expansion workload.
- Cross-backend GitHub Actions checks, tests, demo, and workload.
- Contribution, issue, pull request, security, and licensing policies.
- Structured topology validation for duplicate and missing metadata.
- Unified algorithm dispatcher and deterministic batch placement.