# 高可用性

Alluxio 旨在保持弹性并确保数据始终可用，即使在组件或基础设施出现故障的情况下也是如此。

* [**UFS 回退**](/ee-ai-cn/high-availability/ufs-fallback.md)：当 Alluxio Worker 不可用时，客户端可以自动回退到直接从 UFS 读取，确保读取请求不会中断。
* [**数据多副本**](/ee-ai-cn/high-availability/multiple-replicas.md)：配置文件在多个 Alluxio Worker 上拥有多个副本。当某个 Worker 不可用时，客户端可以无缝切换到另一个副本。这还可以通过分散负载来提升热门文件的读取性能。
* [**多可用区 (Multi-AZ) 部署**](/ee-ai-cn/high-availability/multi-az.md)：将 Alluxio 集群部署在多个可用区 (AZ) 中。当整个可用区宕机时，客户端可以自动切换到另一个可用区中的 Alluxio 集群，提供强健的灾难恢复和不间断服务。


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://documentation.alluxio.io/ee-ai-cn/high-availability.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.