Varnish blocks crawler access

Author: qiaofeng1227

i18n/en/docusaurus-plugin-content-docs/version-2.0/apps/varnish.md

@@ -29,6 +29,18 @@ import Meta from './_include/varnish.md';
 
 4. Visiting the domain that Varnish is bound to, you can see that the access speed is greatly improved! 
 
+### Varnish blocks crawler access
+
+1. Edit the relevant parameters in the Varnish application's `./src/default.vcl` file and add the following content, replacing `Sogou web spider` with the name of the crawler you want to block:
+   ```
+   sub vcl_recv {
+      if (req.http.user-agent ~ “Sogou web spider”) {
+         return (synth(403, “Forbidden”));
+      }
+   }
+   ```
+2. After rebuilding the Varnish application, Varnish has been disabled for the crawler.
+
 ## Configuration options{#configs}
 
 - Cache size: set via VARNISH_SIZE environment variable

versioned_docs/version-2.0/apps/varnish.md

@@ -30,6 +30,20 @@ import Meta from './_include/varnish.md';
 
 4. 访问 Varnish 所绑定的域名，便发现访问速度大大提升 
 
+### Varnish 禁止爬虫访问
+
+1. 编辑 Varnish 应用的 `./src/default.vcl` 文件中相关参数，增加如下内容，其中 `Sogou web spider` 改成你想要禁用的爬虫名：
+   ```
+   sub vcl_recv {
+      if (req.http.user-agent ~ "Sogou web spider") {
+         return (synth(403, "Forbidden"));
+      }
+   }
+
+   ```
+
+2. 重建 Varnish 应用后，Varnish 已经对爬虫禁用
+
 ## 配置选项{#configs}
 
 - 缓存大小：通过 VARNISH_SIZE 环境变量设置