what is this Koleksi data joke dan menyimpan ke dalam file json setiap 5 menit. referensi https://stackoverflow.com/questions/49118572/save-arrays-to-json-file-and-then-use-array-push-to-save-data-in-it https://stackoverflow.com/questions/36856232/write-add-data-in-json-file-using-node-js