Add rejected DNS response cache support

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.