diff --git a/middleware/common.go b/middleware/common.go
index 839dba6..cfc6747 100644
--- a/middleware/common.go
+++ b/middleware/common.go
@@ -1,6 +1,7 @@
 package middleware
 
 import (
+	"fmt"
 	model "github.com/cloudreve/Cloudreve/v3/models"
 	"github.com/cloudreve/Cloudreve/v3/pkg/hashid"
 	"github.com/cloudreve/Cloudreve/v3/pkg/serializer"
@@ -51,3 +52,11 @@ func Sandbox() gin.HandlerFunc {
 		c.Header("Content-Security-Policy", "sandbox")
 	}
 }
+
+// StaticResourceCache 使用静态资源缓存策略
+func StaticResourceCache() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Header("Cache-Control", fmt.Sprintf("public, max-age=%d", model.GetIntSetting("public_resource_maxage", 86400)))
+
+	}
+}
diff --git a/middleware/common_test.go b/middleware/common_test.go
index 000687b..1ab839a 100644
--- a/middleware/common_test.go
+++ b/middleware/common_test.go
@@ -85,3 +85,21 @@ func TestCacheControl(t *testing.T) {
 	TestFunc(c)
 	a.Contains(c.Writer.Header().Get("Cache-Control"), "no-cache")
 }
+
+func TestSandbox(t *testing.T) {
+	a := assert.New(t)
+	TestFunc := Sandbox()
+	rec := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(rec)
+	TestFunc(c)
+	a.Contains(c.Writer.Header().Get("Content-Security-Policy"), "sandbox")
+}
+
+func TestStaticResourceCache(t *testing.T) {
+	a := assert.New(t)
+	TestFunc := StaticResourceCache()
+	rec := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(rec)
+	TestFunc(c)
+	a.Contains(c.Writer.Header().Get("Cache-Control"), "public, max-age")
+}
diff --git a/models/defaults.go b/models/defaults.go
index 8c43b71..3090016 100644
--- a/models/defaults.go
+++ b/models/defaults.go
@@ -114,4 +114,5 @@ Neue',Helvetica,Arial,sans-serif; box-sizing: border-box; font-size: 14px; verti
 	{Name: "pwa_background_color", Value: "#ffffff", Type: "pwa"},
 	{Name: "office_preview_service", Value: "https://view.officeapps.live.com/op/view.aspx?src={$src}", Type: "preview"},
 	{Name: "show_app_promotion", Value: "1", Type: "mobile"},
+	{Name: "public_resource_maxage", Value: "86400", Type: "timeout"},
 }
diff --git a/routers/router.go b/routers/router.go
index 9340bba..e6d9ba1 100644
--- a/routers/router.go
+++ b/routers/router.go
@@ -206,6 +206,7 @@ func InitMasterRouter() *gin.Engine {
 			// 获取用户头像
 			user.GET("avatar/:id/:size",
 				middleware.HashID(hashid.UserID),
+				middleware.StaticResourceCache(),
 				controllers.GetUserAvatar,
 			)
 		}
@@ -217,11 +218,18 @@ func InitMasterRouter() *gin.Engine {
 			file := sign.Group("file")
 			{
 				// 文件外链（直接输出文件数据）
-				file.GET("get/:id/:name", middleware.Sandbox(), controllers.AnonymousGetContent)
+				file.GET("get/:id/:name",
+					middleware.Sandbox(),
+					middleware.StaticResourceCache(),
+					controllers.AnonymousGetContent,
+				)
 				// 文件外链(301跳转)
 				file.GET("source/:id/:name", controllers.AnonymousPermLinkDeprecated)
 				// 下载文件
-				file.GET("download/:id", controllers.Download)
+				file.GET("download/:id",
+					middleware.StaticResourceCache(),
+					controllers.Download,
+				)
 				// 打包并下载文件
 				file.GET("archive/:sessionID/archive.zip", controllers.DownloadArchive)
 			}
diff --git a/service/user/setting.go b/service/user/setting.go
index 4387df2..8d7f619 100644
--- a/service/user/setting.go
+++ b/service/user/setting.go
@@ -76,8 +76,6 @@ type ThemeChose struct {
 	Theme string `json:"theme" binding:"required,hexcolor|rgb|rgba|hsl"`
 }
 
-const avatarMaxAge = 3600
-
 // Update 更新主题设定
 func (service *ThemeChose) Update(c *gin.Context, user *model.User) serializer.Response {
 	user.OptionsSerialized.PreferredTheme = service.Theme
@@ -196,8 +194,6 @@ func (service *AvatarService) Get(c *gin.Context) serializer.Response {
 		"l": model.GetSettingByName("avatar_size_l"),
 	}
 
-	c.Header("Cache-Control", fmt.Sprintf("max-age=%d", avatarMaxAge))
-
 	// Gravatar 头像重定向
 	if user.Avatar == "gravatar" {
 		server := model.GetSettingByName("gravatar_server")