Add rejected DNS response cache support

docs/configuration/dns/rule.md

@@ -339,10 +339,14 @@ Will overrides `dns.client_subnet` and `servers.[].client_subnet`.
 
 Only takes effect for IP address requests. When the query results do not match the address filtering rule items, the current rule will be skipped.
 
-!!! note ""
+!!! info ""
 
     `ip_cidr` items in included rule sets also takes effect as an address filtering field.
 
+!!! note ""
+
+    Enable `experimental.cache_file.store_rdrc` to cache results.
+
 #### geoip
 
 !!! question "Since sing-box 1.9.0"

docs/configuration/dns/rule.zh.md

@@ -337,10 +337,14 @@ DNS 查询类型。值可以为整数或者类型名称字符串。
 
 仅对IP地址请求生效。 当查询结果与地址筛选规则项不匹配时，将跳过当前规则。
 
-!!! note ""
+!!! info ""
 
     引用的规则集中的 `ip_cidr` 项也作为地址筛选字段生效。
 
+!!! note ""
+
+    启用 `experimental.cache_file.store_rdrc` 以缓存结果。
+
 #### geoip
 
 !!! question "自 sing-box 1.9.0 起"

docs/configuration/experimental/cache-file.md

@@ -1,5 +1,14 @@
+---
+icon: material/new-box
+---
+
 !!! question "Since sing-box 1.8.0"
 
+!!! quote "Changes in sing-box 1.9.0"
+
+    :material-plus: [store_rdrc](#store_rdrc)  
+    :material-plus: [rdrc_timeout](#rdrc_timeout)  
+
 ### Structure
 
 ```json
@@ -7,7 +16,9 @@
   "enabled": true,
   "path": "",
   "cache_id": "",
-  "store_fakeip": false
+  "store_fakeip": false,
+  "store_rdrc": false,
+  "rdrc_timeout": ""
 }
 ```
 
@@ -25,6 +36,23 @@ Path to the cache file.
 
 #### cache_id
 
-Identifier in cache file.
+Identifier in the cache file
 
 If not empty, configuration specified data will use a separate store keyed by it.
+
+#### store_fakeip
+
+Store fakeip in the cache file
+
+#### store_rdrc
+
+Store rejected DNS response cache in the cache file
+
+The check results of [Address filter DNS rule items](/configuration/dns/rule/#address-filter-fields)
+will be cached until expiration.
+
+#### rdrc_timeout
+
+Timeout of rejected DNS response cache.
+
+`7d` is used by default.

docs/configuration/experimental/cache-file.zh.md

@@ -1,5 +1,14 @@
+---
+icon: material/new-box
+---
+
 !!! question "自 sing-box 1.8.0 起"
 
+!!! quote "sing-box 1.9.0 中的更改"
+
+    :material-plus: [store_rdrc](#store_rdrc)  
+    :material-plus: [rdrc_timeout](#rdrc_timeout)  
+
 ### 结构
 
 ```json
@@ -7,7 +16,9 @@
   "enabled": true,
   "path": "",
   "cache_id": "",
-  "store_fakeip": false
+  "store_fakeip": false,
+  "store_rdrc": false,
+  "rdrc_timeout": ""
 }
 ```
 
@@ -26,3 +37,19 @@
 缓存文件中的标识符。
 
 如果不为空，配置特定的数据将使用由其键控的单独存储。
+
+#### store_fakeip
+
+将 fakeip 存储在缓存文件中。
+
+#### store_rdrc
+
+将拒绝的 DNS 响应缓存存储在缓存文件中。
+
+[地址筛选 DNS 规则项](/zh/configuration/dns/rule/#_3) 的检查结果将被缓存至过期。
+
+#### rdrc_timeout
+
+拒绝的 DNS 响应缓存超时。
+
+默认使用 `7d`。