en: update document.

2023-03-26 02:02:54 +08:00
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+---
+hide:
+  - toc
+---
+
+# CNAME Alias Query
+
+In some cases, it is necessary to use the results of the query of domain B for the query of domain A, such as the optimization of the speed of some CDN. At this time, you can use the CNAME alias query function.
+
+## Configuration Steps
+
+1. Use `cname /a.com/b.com` to configure the proxy server
+
+    ```shell
+    cname /a.com/b.com
+    ```
+
+    In the above example, when querying a.com, the query result of b.com will be used.