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Cached table size limit should be 64 MiB #19486

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Jan 7, 2025
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Cached table size limit should be 64 MiB #19486

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2 changes: 1 addition & 1 deletion cached-tables.md
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Expand Up @@ -215,7 +215,7 @@ Query OK, 0 rows affected (0.00 sec)

由于 TiDB 将整张缓存表的数据加载到 TiDB 进程的内存中，并且执行修改操作后缓存会失效，需要重新加载，所以 TiDB 缓存表只适用于表比较小的场景。

目前 TiDB 对于每张缓存表的大小限制为 64 MB。如果表的数据超过了 64 MB，执行 `ALTER TABLE t CACHE` 会失败。
目前 TiDB 对于每张缓存表的大小限制为 64 MiB。如果表的数据超过了 64 MiB，执行 `ALTER TABLE t CACHE` 会失败。

## 与其他 TiDB 功能的兼容性限制

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