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fec-browser-storage

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用于选择、实现或审查 localStorage、sessionStorage、IndexedDB、cookie、客户端持久化、离线数据、安全存储或清理策略等浏览器存储方案；中文触发词包括 浏览器存储、客户端持久化。

localized/zh-CN/skills/fec-browser-storage/SKILL.md

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Nov 8, 2026
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# 浏览器存储

## 用途

根据数据大小、安全要求和生命周期选择合适的客户端存储方案。

## 流程

1. 先判断数据敏感度、体积、生命周期、是否需要跨 Tab、是否需要随请求发送。
2. 小量非敏感偏好用 localStorage；Tab 级临时数据用 sessionStorage；大量结构化数据或离线缓存用 IndexedDB；认证态优先 httpOnly cookie。
3. 封装统一 key 前缀、JSON parse/stringify、异常处理、过期清理和 quota 兜底。
4. 敏感数据按安全规则处理，不把明文 token、密码、信用卡信息放进可被 JS 读取的存储。
5. 审查隐私模式、存储配额、清理策略和跨浏览器兼容性。
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