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# P1 优化：优化缓存策略
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## 目标
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为 RuoYi-Vue 后端添加 Redis 缓存支持，提升常用查询性能 50% 以上。
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## 范围
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- 字典数据缓存
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- 配置参数缓存
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- 用户信息缓存
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- 菜单数据缓存
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## 技术栈
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- Spring Cache
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- Redis
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- Caffeine（本地缓存）
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## 验收标准
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- 字典查询缓存命中率 > 90%
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- 常用接口响应时间 < 100ms
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- 缓存更新机制完整
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