diff --git a/luasrc/model/cbi/mosdns/basic.lua b/luasrc/model/cbi/mosdns/basic.lua
index 30ddbaf..716838b 100644
--- a/luasrc/model/cbi/mosdns/basic.lua
+++ b/luasrc/model/cbi/mosdns/basic.lua
@@ -38,6 +38,19 @@ dnsforward:value("208.67.222.222", "208.67.222.222 (Open DNS)")
 dnsforward:value("208.67.220.220", "208.67.220.220 (Open DNS)")
 dnsforward:depends( "configfile", "./def_config.yaml")
 
+cache_size = s:option(Value, "cache_size", translate("DNS Cache Size"))
+cache_size.datatype = "and(uinteger,min(0))"
+cache_size.rmempty = false
+
+minimal_ttl = s:option(Value, "minimal_ttl", translate("Minimum TTL"))
+minimal_ttl.datatype = "and(uinteger,min(1))"
+minimal_ttl.datatype = "and(uinteger,max(3600))"
+minimal_ttl.rmempty = false
+
+maximum_ttl = s:option(Value, "maximum_ttl", translate("Maximum TTL"))
+maximum_ttl.datatype = "and(uinteger,min(1))"
+maximum_ttl.rmempty = false
+
 redirect = s:option(Flag, "redirect", translate("Enable DNS Redirect"))
 redirect:depends( "configfile", "./def_config.yaml")
 redirect.default = true
diff --git a/po/zh-cn/mosdns.po b/po/zh-cn/mosdns.po
index 6c0afd6..b3031a6 100644
--- a/po/zh-cn/mosdns.po
+++ b/po/zh-cn/mosdns.po
@@ -108,3 +108,12 @@ msgstr "MosDNS 日志文件"
 
 msgid "Remote DNS"
 msgstr "远程 DNS"
+
+msgid "DNS Cache Size"
+msgstr "DNS 缓存大小"
+
+msgid "Minimum TTL"
+msgstr "覆盖最小 TTL 值"
+
+msgid "Maximum TTL"
+msgstr "覆盖最大 TTL 值"
diff --git a/root/etc/config/mosdns b/root/etc/config/mosdns
index f24ade5..141163e 100644
--- a/root/etc/config/mosdns
+++ b/root/etc/config/mosdns
@@ -11,5 +11,9 @@ config mosdns 'mosdns'
 	option adblock '0'
 	option configfile './def_config.yaml'
 	option loglv 'error'
-	option logfile '/dev/null'
-	option dns_forward 'tls://8.8.4.4'
\ No newline at end of file
+	option logfile '/tmp/mosdns.log'
+	option dns_forward 'tls://8.8.4.4'
+	option cache_size '1024'
+	option minimal_ttl '300'
+	option maximum_ttl '3600'
+
diff --git a/root/etc/mosdns/def_config.yaml b/root/etc/mosdns/def_config.yaml
index 30b2b2d..66cf4bd 100644
--- a/root/etc/mosdns/def_config.yaml
+++ b/root/etc/mosdns/def_config.yaml
@@ -34,6 +34,9 @@ plugin:
           exec:
             - _block_with_nxdomain
             - _return
+
+        - mem_cache
+
         - if:
             - query_is_non_local_domain
           exec:
@@ -50,6 +53,19 @@ plugin:
           fast_fallback: 150
           always_standby: true
 
+        - modify_ttl
+
+  - tag: 'mem_cache'
+    type: 'cache'
+    args:
+      size: ${{ uci -q get mosdns.mosdns.cache_size }}
+
+  - tag: 'modify_ttl'
+    type: 'ttl'
+    args:
+      minimal_ttl: ${{ uci -q get mosdns.mosdns.minimal_ttl }}
+      maximum_ttl: ${{ uci -q get mosdns.mosdns.maximum_ttl }}
+
   - tag: forward_local
     type: fast_forward
     args: