- [摘要](#summary)
- [目标](#goals)
- [提案](#proposal)
  - [用户场景(可选)](#user-scenario-optional)
  - [风险](#risks)
- [设计细节](#design-details)
  - [测试计划](#test-plan)
  - [升级/降级策略](#upgrade-downgrade-strategy)
  - [版本策略](#version-strategy)
- [备选方案](#alternatives)
- [基础设施(可选)](#infrastructure-optional)