Added cache control middleware

service/internal/webservice/middleware.go

@@ -0,0 +1,37 @@
+package webservice
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/samber/lo"
+	"path/filepath"
+)
+
+func CacheControl() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		cacheableSuffixes := []string{
+			".css",
+			".js",
+			".png",
+			".jpg",
+			".jpeg",
+			".gif",
+			".ico",
+			".svg",
+			".woff",
+			".woff2",
+			".ttf",
+			".eot",
+			".otf",
+		}
+
+		_, found := lo.Find(cacheableSuffixes, func(prefix string) bool {
+			return filepath.Ext(c.Request.RequestURI) == prefix
+		})
+
+		if found {
+			c.Writer.Header().Set("Cache-Control", "public, max-age=604800, immutable")
+		} else {
+			c.Writer.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
+		}
+	}
+}

service/internal/webservice/server.go

@@ -44,12 +44,13 @@ func Serve(indexer *indexer.Search, pushChan *PushChannel, bindAddr string) erro
 	r := gin.New()
 	r.Use(gin.Recovery())
 	r.Use(logger.SetLogger())
+	r.Use(CacheControl())
 
 	r.Use(cors.New(cors.Config{
 		AllowOrigins:     []string{"http://localhost:10000", "http://localhost:5173"},
 		AllowMethods:     []string{"GET", "POST", "OPTIONS", "PUT", "DELETE"},
 		AllowHeaders:     []string{"Origin", "Content-Type", "Accept", "Accept-Encoding"},
-		ExposeHeaders:    []string{"Content-Length", "Content-Type", "Content-Encoding"},
+		ExposeHeaders:    []string{"*"},
 		AllowCredentials: true,
 		AllowOriginFunc: func(origin string) bool {
 			return true