Add dns.cache_capacity

docs/configuration/dns/index.md

@@ -1,3 +1,12 @@
+---
+icon: material/new
+---
+
+
+!!! quote "Changes in sing-box 1.11.0"
+
+    :material-plus: [cache_capacity](#cache_capacity)
+
 !!! quote "Changes in sing-box 1.9.0"
 
     :material-plus: [client_subnet](#client_subnet)
@@ -16,6 +25,7 @@
     "disable_cache": false,
     "disable_expire": false,
     "independent_cache": false,
+    "cache_capacity": 0,
     "reverse_mapping": false,
     "client_subnet": "",
     "fakeip": {}
@@ -58,6 +68,14 @@ Disable dns cache expire.
 
 Make each DNS server's cache independent for special purposes. If enabled, will slightly degrade performance.
 
+#### cache_capacity
+
+!!! quote "Since sing-box 1.11.0"
+
+LRU cache capacity.
+
+Value less than 1024 will be ignored.
+
 #### reverse_mapping
 
 Stores a reverse mapping of IP addresses after responding to a DNS query in order to provide domain names when routing.