BTW, did anyone find the reason for this frequent downtime? In just one month, I faced this issue 2-3 times.
I thought I was the only one counting. I noticed this and it is a bit worrisome. I am a technical person in the area of website downtime and Cloudflare error issues but If I may ask, and pardon my question, can these frequent issues be resolved with a new forum software(I don't know if there is anything like this) or a forum upgrade?
No you are not alone here. We, everyone is facing the same problem. This problem wasn't that frequent in the past. That may be the reason you hadn't noticed it until now. But it become more frequent for the past few months. Within months I faced the issue 4-5 times, if I remember correctly. Even yesterday, the same issue happen. The downtime gas also increased. Yesterday it was down for 2 hours. The highest downtime I think was, 3hr 21 minutes something. I don't remember. But before, it wasn't that much, so it didn't caught your eyes. Just look at what theymos said.
It was the same weird thing which caused a few hours of downtime 6-12 months ago, and I think it's what causes the few minutes of downtime people observe every few weeks. I've never been able to figure out what causes it. It looks like the network gets cut between the web server and the database for a while. It seems to always happen at around the same time, so I suppose it's probably some automated maintenance process messing something up, but I don't have anything running at this time, so I wonder if it's something in the web-host's networking infrastructure, or something like that. It's difficult to diagnose, since it happens rarely, and usually when I'm sleeping.
I'm planning on upgrading the main servers sometime in the next few months. (Just as part of standard maintenance: there will be no user-visible changes other than perhaps slightly improved speed.) Maybe that'll fix it just by virtue of moving things to different areas.
(The few minutes of downtime just now was due to me doing something, and is unrelated.)