Yep, Morty never has 502 errors because there are far fewer domains on that server, and it only takes Apache 10 seconds or so to restart. Morty also uses graceful restarts so the old Apache threads continue serving requests while the new Apache threads load up the configuration. On the free hosting plans we use hard Apache restarts which shows 502 errors for a minute or two every time Apache is restarted. You can read more about 502 errors with this link if you want to https://wiki.helionet.org/502_Bad_Gateway