Khoirul Anam, Faris Abdillah Haq, Sylvia Fajrin, and Fida Rezaldi Rifai. “Performance Testing and Stress Levels on the Heymale.Id . Website Using Autosaved Software Testing GTmetrix and K6”. Jurnal Sistem Informasi Dan Teknologi Informasi, vol. 1, no. 1, Apr. 2022, pp. 1-12, https://journal-siti.org/index.php/siti/article/view/19.