From 484565a5d3d66f730d7d8ebaad8c59e006186e96 Mon Sep 17 00:00:00 2001
From: StellarisW <wx.xw@bytedance.com>
Date: Mon, 4 Nov 2024 10:49:12 +0800
Subject: [PATCH] docs: fix volo http fallback (#1164)

---
 content/en/docs/volo/volo-http/tutorials/route.md | 9 ++++++---
 content/zh/docs/volo/volo-http/tutorials/route.md | 9 ++++++---
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/content/en/docs/volo/volo-http/tutorials/route.md b/content/en/docs/volo/volo-http/tutorials/route.md
index 54fcd405aa..a40bd62255 100644
--- a/content/en/docs/volo/volo-http/tutorials/route.md
+++ b/content/en/docs/volo/volo-http/tutorials/route.md
@@ -279,11 +279,14 @@ async fn router() -> Router {
 
 ## Fallback
 
-Volo-HTTP provides a fallback function to handle request url or method mismatches.
+Volo-HTTP provides a fallback function to handle request url or method mismatches, **default fallback** will return status code `404 Not Found`.
 
-### url
+**Note**:
+- Since there is no way to determine which **router fallback** to override in a route in a call to the `merge` method, only one **router fallback** can be set, or else a **panic** will be generated in the call to the `merge` method;
+
+- The `nest` method is called without overriding the `fallback`.
 
-> Note: Only one **router fallback** can be set globally, otherwise it will generate a **panic** when the `merge` method is called.
+### url
 
 **Example**:
 
diff --git a/content/zh/docs/volo/volo-http/tutorials/route.md b/content/zh/docs/volo/volo-http/tutorials/route.md
index 10e5a09020..6fada2ca79 100644
--- a/content/zh/docs/volo/volo-http/tutorials/route.md
+++ b/content/zh/docs/volo/volo-http/tutorials/route.md
@@ -275,11 +275,14 @@ async fn router() -> Router {
 
 ## fallback
 
-Volo-HTTP 提供了 fallback 功能用于处理请求 url 或 method 不匹配的情况
+Volo-HTTP 提供了 fallback 功能用于处理请求 url 或 method 不匹配的情况，**默认 fallback** 会返回状态码 `404 Not Found`。
 
-### url
+**注意**：
+- 调用 `merge` 方法中的路由中由于不能确定覆盖哪一个 **router fallback**, 因此只能设置一个 **router fallback**，否则会在调用 `merge` 方法时产生 **panic**；
+
+- 调用 `nest` 方法时不会对 `fallback` 进行覆盖。
 
-> 注意：全局只能设置一个 **router fallback**，否则会在调用 `merge` 方法时产生 **panic**
+### url
 
 **代码示例**: