Whoops outage yesterday

Since this long server outage, I encounter unusual and sporadic timeouts while submitting the data from RadLogger Pro. Of course, I've restarted all my systems, including my fiber optic router which manages my high speed Internet connection, but without improvement to the sporadic timeouts... Maybe something had not recovered well on the server side?

Maybe, if there is a spike in automated graph processing... back to "refresh" button?
Also, could there be a hacking attempt in progress? I have noticed at times there are 10s of thousands of Guests online (now forum home page - 5660 guests.) I noticed the same thing before the big hack.

Yes, it's happening completely randomly but quite often. I'm not sure if I got a very very delayed "200, OK" reply or if I didn't get any reply: Radlog reports only a "timeout". If I've enough time, I will try to setup a wireshark to figure out the reply time to each Radlog tcp submission.

Hello,
Finally I could record one event using Wireshark.
It seems that the server completely miss the opening of a connection (port 52224 in the attached picture), the first attempt failed, but also the two following retries 3 and 9 seconds later. Of course as the connection failed to establish at the tcp level, no http request could be sent, reason why radmon Radlogger Pro reported a timeout.
The previous one (port 52222) and the next one, 60s later (port 52226) were successful.
I let you investigate on your side if you could confirm that...
Kind regards,

PS: I noticed also several retransmission attempts at different level (often a missing ACK) and systematic RST to close a previous connection just before opening a new one (don't know the root cause).