Performance improvement in renders

render/json.go

@@ -16,16 +16,20 @@ func (_ jsonRender) Render(w http.ResponseWriter, code int, data ...interface{})
 }
 
 func (_ indentedJSON) Render(w http.ResponseWriter, code int, data ...interface{}) error {
-	WriteHeader(w, code, "application/json")
-	jsonData, err := json.MarshalIndent(data[0], "", "    ")
+	return WriteIndentedJSON(w, code, data[0])
+}
+
+func WriteJSON(w http.ResponseWriter, code int, data interface{}) error {
+	writeHeader(w, code, "application/json; charset=utf-8")
+	return json.NewEncoder(w).Encode(data)
+}
+
+func WriteIndentedJSON(w http.ResponseWriter, code int, data interface{}) error {
+	writeHeader(w, code, "application/json; charset=utf-8")
+	jsonData, err := json.MarshalIndent(data, "", "    ")
 	if err != nil {
 		return err
 	}
 	_, err = w.Write(jsonData)
 	return err
 }
-
-func WriteJSON(w http.ResponseWriter, code int, data interface{}) error {
-	WriteHeader(w, code, "application/json")
-	return json.NewEncoder(w).Encode(data)
-}