Hello, I have just noticed that my wiki is not currently available, because of "unscheduled maintenance". i have seen some messages announcing scheduled maintenance before, but this was unexpected for me.
I have some questions regarding this - first of all, how often does unscheduled maintenance happen? is it once every week? once every month? once every couple months? Second of all, how long does it usually last? Since this wiki is an official documentation for an opensource project i'm contributing to, i would really prefer for the downtime to be minimal, and if this is going to happen often and will take a long time, then i may move away from miraheze and look for other hosting services.
Since i haven't seen this before i assume this happens rarely and is not really a big problem, but i still would like some general info on how often this happens