diff --git a/apple-touch-icon.png b/apple-touch-icon.png
new file mode 100644
index 0000000..40151a0
Binary files /dev/null and b/apple-touch-icon.png differ
diff --git a/assets/images/logo.jpg b/assets/images/logo.jpg
new file mode 100644
index 0000000..84a5896
Binary files /dev/null and b/assets/images/logo.jpg differ
diff --git a/favicon.ico b/favicon.ico
new file mode 100644
index 0000000..f0264e8
Binary files /dev/null and b/favicon.ico differ
diff --git a/go.mod b/go.mod
index 80a3e85..a3e2a1a 100644
--- a/go.mod
+++ b/go.mod
@@ -2,12 +2,13 @@ module github.com/goproxy/goproxy.cn
 
 require (
 	github.com/BurntSushi/toml v0.3.1
+	github.com/air-gases/cacheman v0.7.4
 	github.com/air-gases/defibrillator v0.12.4
 	github.com/air-gases/limiter v0.12.4
 	github.com/air-gases/logger v0.12.4
 	github.com/air-gases/redirector v0.12.4
 	github.com/aofei/air v0.12.4
-	github.com/goproxy/goproxy v0.0.0-20190809144859-080f99010796
+	github.com/goproxy/goproxy v0.0.0-20190812143559-921935e9a7e6
 	github.com/mitchellh/mapstructure v1.1.2
 	github.com/rs/zerolog v1.14.3
 )
diff --git a/go.sum b/go.sum
index 74ec9ec..1fdb0ec 100644
--- a/go.sum
+++ b/go.sum
@@ -6,6 +6,8 @@ github.com/OneOfOne/xxhash v1.2.5/go.mod h1:eZbhyaAYD41SGSSsnmcpxVoRiQ/MPUTjUdII
 github.com/VictoriaMetrics/fastcache v1.5.1 h1:qHgHjyoNFV7jgucU8QZUuU4gcdhfs8QW1kw68OD2Lag=
 github.com/VictoriaMetrics/fastcache v1.5.1/go.mod h1:+jv9Ckb+za/P1ZRg/sulP5Ni1v49daAVERr0H3CuscE=
 github.com/a8m/mark v0.1.1-0.20170507133748-44f2db618845/go.mod h1:c8Mh99Cw82nrsAnPgxQSZHkswVOJF7/MqZb1ZdvriLM=
+github.com/air-gases/cacheman v0.7.4 h1:YHPAHhTqM35p5e2wqmmPvOI8cH2qOrpd8vLJk10J2Wo=
+github.com/air-gases/cacheman v0.7.4/go.mod h1:TJmesy/aTLt4S/pobyCsoL3YQxH2yqdnMolO+WNqmSU=
 github.com/air-gases/defibrillator v0.12.4 h1:HF0f2sRiUgMjo/Zis7Qk5QGqWxQanqyZvMzorx/Ptfg=
 github.com/air-gases/defibrillator v0.12.4/go.mod h1:aE/1W3C8pHIrA5UnCDOZc8GymWzmIMkM+GNauLIGDa4=
 github.com/air-gases/limiter v0.12.4 h1:8fbuWeEbCw7Ge4NEu/JGJuSdDJu5i1r+BjSRR1KQNNg=
@@ -42,8 +44,8 @@ github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEW
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gopherjs/gopherjs v0.0.0-20190430165422-3e4dfb77656c h1:7lF+Vz0LqiRidnzC1Oq86fpX1q/iEv2KJdrCtttYjT4=
 github.com/gopherjs/gopherjs v0.0.0-20190430165422-3e4dfb77656c/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
-github.com/goproxy/goproxy v0.0.0-20190809144859-080f99010796 h1:W+BJrnBAHlS2vKFBnEOWM3Qa+qgLDdfMaDHollJgc1A=
-github.com/goproxy/goproxy v0.0.0-20190809144859-080f99010796/go.mod h1:rfiiqmbdu8wueRXcp96RTer4wRcBb23lUtdNghyaOas=
+github.com/goproxy/goproxy v0.0.0-20190812143559-921935e9a7e6 h1:XnIh7jsnREGCHoDsiZnC8JEwrxoad72ATvimcW5B9QA=
+github.com/goproxy/goproxy v0.0.0-20190812143559-921935e9a7e6/go.mod h1:rfiiqmbdu8wueRXcp96RTer4wRcBb23lUtdNghyaOas=
 github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
 github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
 github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
diff --git a/handler/handler.go b/handler/handler.go
index f195917..c32ca29 100644
--- a/handler/handler.go
+++ b/handler/handler.go
@@ -3,14 +3,27 @@ package handler
 import (
 	"net/http"
 
+	"github.com/air-gases/cacheman"
 	"github.com/aofei/air"
 	"github.com/goproxy/goproxy"
 	"github.com/goproxy/goproxy.cn/cfg"
 	"github.com/goproxy/goproxy/cacher"
 )
 
-// a is the `air.Default`.
-var a = air.Default
+var (
+	// a is the `air.Default`.
+	a = air.Default
+
+	// getHeadMethods is an array contains the GET and the HEAD methods.
+	getHeadMethods = []string{http.MethodGet, http.MethodHead}
+
+	// cachemanGas is used to manage the Cache-Control header.
+	cachemanGas = cacheman.Gas(cacheman.GasConfig{
+		Public:  true,
+		MaxAge:  3600,
+		SMaxAge: -1,
+	})
+)
 
 func init() {
 	g := goproxy.New()
@@ -24,11 +37,11 @@ func init() {
 
 	g.ErrorLogger = a.ErrorLogger
 
-	a.BATCH(
-		[]string{http.MethodGet, http.MethodHead},
-		"/",
-		indexPageHandler,
-	)
+	a.FILE("/robots.txt", "robots.txt")
+	a.FILE("/favicon.ico", "favicon.ico", cachemanGas)
+	a.FILE("/apple-touch-icon.png", "apple-touch-icon.png", cachemanGas)
+	a.FILES("/assets", a.CofferAssetRoot, cachemanGas)
+	a.BATCH(getHeadMethods, "/", indexPageHandler, cachemanGas)
 	a.BATCH(nil, "/*", air.WrapHTTPHandler(g))
 }
 
diff --git a/robots.txt b/robots.txt
new file mode 100644
index 0000000..769dad9
--- /dev/null
+++ b/robots.txt
@@ -0,0 +1,7 @@
+User-Agent: *
+Disallow: /*/@latest
+Disallow: /*/@v/list
+Disallow: /*/@v/*.info
+Disallow: /*/@v/*.mod
+Disallow: /*/@v/*.zip
+Disallow: /sumdb/