Try to enable caching

http/http.go

@@ -3,6 +3,7 @@ package http
 import (
 	"io/fs"
 	"net/http"
+	"strings"
 
 	"git.javil.eu/jacob1123/budgeteer"
 	"git.javil.eu/jacob1123/budgeteer/bcrypt"
@@ -39,6 +40,7 @@ func (h *Handler) Serve() {
 	if err != nil {
 		panic("couldn't open static files")
 	}
+	router.Use(headersByRequestURI())
 	router.StaticFS("/static", http.FS(static))
 
 	router.GET("/", func(c *gin.Context) { c.HTML(http.StatusOK, "index.html", nil) })
@@ -83,3 +85,11 @@ func (h *Handler) Serve() {
 
 	router.Run(":1323")
 }
+
+func headersByRequestURI() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if strings.HasPrefix(c.Request.RequestURI, "/static/") {
+			c.Header("Cache-Control", "max-age=86400")
+		}
+	}
+}