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The original was posted on /r/ProgrammerHumor by /u/universaltruthsayer on 2023-11-08 01:54:59.
This is third-hand info, but apparently the Optus situation was heaps cooked.
Every one of their devices had been deregistered and needed to essentially “register” with their servers, i.e., a tower.
A similar thing happened with Telstra a while ago that impacted only Vic and Tas, but it took them ages because they had to take a bunch of towers offline and slowly bring them on so that all the devices constantly trying to re-register didn’t brute-force them and take things offline again
Multiply that by a few hundred thousand/million devices and that’s what Optus was dealing with... Oof