feat(cache,middlewares): cache middlewares

app/app.go

@@ -61,10 +61,15 @@ func (a *App) Run() {
 	r := router.NewRouter()
 
 	r.Use(mlogger.Wrap)
-	if a.dev {
-		r.Use(middleware.DevMiddleware)
 
+	if a.dev {
+		logger.Info("RUNNING IN DEVELOPMENT MODE")
+
+		r.Use(middleware.DevMiddleware)
 		r.Handle("/_dev", devPages.Routes())
+
+	} else {
+		r.Use(middleware.CacheMiddleware)
 	}
 
 	r.Handle("/assets/", a.assets)

router/middleware/cache.go

@@ -0,0 +1,12 @@
+package middleware
+
+import (
+	"net/http"
+)
+
+func CacheMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Cache-Control", "max-age=604800, stale-while-revalidate=86400, public")
+		next.ServeHTTP(w, r)
+	})
+}