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faq: Describe in what condition TiDB and RawKV can be used together #17628

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faq: Describe in what condition TiDB and RawKV can be used together #17628

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Expand Up @@ -378,7 +378,10 @@ TiKV 的内存占用主要来自于 RocksDB 的 block-cache，默认为系统总

### TiDB 数据和 RawKV 数据可存储于同一个 TiKV 集群里吗？

不可以。TiDB 数据（或使用其他事务 API 生成的数据）依赖于一种特殊的键值格式，和 RawKV API 数据（或其他基于 RawKV 的服务生成的数据）并不兼容。
这取决于你使用的 TiDB 版本以及是否启用了 TiKV API V2 （即 [`storage.api-version = 2`](/tikv-configuration-file.md#api-version-从-v610-版本开始引入)）。

- 如果你使用的是 v6.1.0 或之后版本的 TiDB，并且启用了 TiKV API V2，那么 TiDB 数据和 RawKV 数据可以共存于同一个 TiKV 集群。
- 否则，不可以将 TiDB 数据和 RawKV 数据存储于同一个 TiKV 集群中，因为 TiDB 数据（或使用事务 API 创建的数据）的 key 的格式与使用 RawKV API 创建的数据（或来自其他基于 RawKV 的服务生成的数据）不兼容。

## TiDB 测试

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