Looks great, thanks for the link! Some very nice examples of other cool stuff that depends on the blessed Python package: https://github.com/jquast/blessed
Control theory is mostly based on physical devices and analog variables, so it does not often fit with software systems.
However you are right nonetheless. Large networks contain a lot of caching of different kinds and other forms of data replication.
Caches warm up by transferring data and the available bandwidth to do so is never infinite. Especially when flipping traffic between whole datacenters.
Most load balancing systems are simply unaware of this.
The amount of unused computing and storage on personal devices is staggering.
Yet HN never misses the opportunity to dogpile on anyone who points this out: data trasfer costs, battery usage, jokes about the Silicon Valley sitcom.
As if most phones weren't connected to wifi and power for 10+ hours a day.
Someone still needs to pay for the data transfer costs ala ngrok.
I don't know of a single US mobile network that provides publicly addressable IP space, v4 or v6, it's all behind more than one layer of NAT.
AT&T doesn't even allow direct internet access, every single connection goes through their horrendously bad transparent proxy that breaks TLS 1.3, breaks ESNI, causes a SSL_RX_RECORD_TOO_LONG connection reset if you negotiate only modern ciphers, and sits in the middle of every connection to prevent things like obfsproxy.
If anything it's the end of OpenAI