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微信小程序的本地缓存API（wx.setStorageSync / wx.getStorageSync）允许将数据存储在用户设备本地，单个小程序上限为10MB

1

Sources

50%

Confidence

Long-term

Relevance

7/20/2026

First Seen

Sources

零基础用Codex做微信小程序：AI编程完整入门指南

Related Claims

UnverifiedLocalStorage的存储上限通常仅为5-10MB，且与浏览器实例严格绑定，换设备或浏览器数据即消失，无法跨设备同步69% similar UnverifiedlocalStorage是Web Storage API的一部分，每个域名下的localStorage通常有5-10MB的存储限制66% similar Unverified偶尔一次短途出行不建议下载整省矢量数据包，用App的临时缓存/画框下载功能只保存目标区域，可将存储占用从GB级降到几十MB65% similar Unverified机身内置存储有限，重度本地曲库用户需配合TF卡扩展存储63% similar Unverified栈由操作系统在线程创建时预先分配一块连续内存区域，通常为1MB到8MB63% similar

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