the.com/uptime
the percentage of time your server pretends it never gets tired.
means the measure of how long a system stays operational and available without failing.
from from computing culture in the 1970s-80s, when mainframes were tracked for how long they ran between crashes, becoming the ultimate bragging right for sysadmins.
five nines99.999% uptime allows just 5 minutes downtime yearly
unit of pridesysadmins measure servers like marathon runners measure streaks
opposite costone hour of downtime can cost companies millions