tokers commented on a change in pull request #4016:
URL: https://github.com/apache/apisix/pull/4016#discussion_r611145081
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File path: docs/en/latest/admin-api.md
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@@ -94,7 +94,10 @@ Note: When the `Admin API` is enabled, it will occupy the
API prefixed with `/ap
| create_time | False | Auxiliary |
epoch timestamp in second, will be created automatically if missing
| 1602883670 |
| update_time | False | Auxiliary |
epoch timestamp in second, will be created automatically if missing
| 1602883670 |
-For the same type of parameters, such as `host` and `hosts`, `remote_addr` and
`remote_addrs` cannot exist at the same time, only one of them can be selected.
If enabled at the same time, the API will respond with an error.
+There are two points that need special attention:
+
+- For the same type of parameters, such as `host` and `hosts`, `remote_addr`
and `remote_addrs` cannot exist at the same time, only one of them can be
selected. If enabled at the same time, the API will respond with an error.
+- In `vars`, when getting the cookie value, the cookie name is case-sensitive.
For example: `var` equals "cookie_x_foo" and `var` equals "cookie_X_Foo" means
different `cookie`.
Review comment:
```suggestion
- In `vars`, when getting the cookie value, the cookie name is
**case-sensitive**. For example: `var` equals "cookie_x_foo" and `var` equals
"cookie_X_Foo" means different `cookie`.
```
##########
File path: docs/zh/latest/admin-api.md
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@@ -558,7 +558,7 @@ APISIX 的 Upstream 除了基本的复杂均衡算法选择外，还支持对上
1. 设为 `vars` 时，`key` 为必传参数，目前支持的 Nginx 内置变量有 `uri, server_name, server_addr,
request_uri, remote_port, remote_addr, query_string, host, hostname,
arg_***`，其中 `arg_***` 是来自 URL 的请求参数，[Nginx
变量列表](http://nginx.org/en/docs/varindex.html)
2. 设为 `header` 时, `key` 为必传参数，其值为自定义的 header name, 即 "http\_`key`"
-3. 设为 `cookie` 时, `key` 为必传参数，其值为自定义的 cookie name，即 "cookie\_`key`"
+3. 设为 `cookie` 时, `key` 为必传参数，其值为自定义的 cookie name，即 "cookie\_`key`"。请注意 cookie
name 是区分大小写字母的。例如："cookie_x_foo" 与 "cookie_X_Foo" 表示不同的 `cookie`。
Review comment:
```suggestion
3. 设为 `cookie` 时, `key` 为必传参数，其值为自定义的 cookie name，即 "cookie\_`key`"。请注意
cookie name 是**区分大小写字母**的。例如："cookie_x_foo" 与 "cookie_X_Foo" 表示不同的 `cookie`。
```
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