Is this very common for larger enterprises that have many thousands of servers to use something like ant colony or similar algorithms to work together with network routing protocols like BGP to solve Traveling Salesman Problem (TSP) to optimize their routing globally throughout their data centers?
It's very common for data centers to have a level of oversubscription. Although it was surprising to see that Facebook has their network topology without oversubscription. Would TSP optimization still apply when there is no oversubscription by design? I guess it's still needed when one of the spine switches gets lost and there is again some level of oversubscription.
A typical network today (not necessarily Google) may have 10K+ switches, 250K+ links, 10M+ routing rules.
It all may get even more complicated with VPCs in play, limitations of networking of edge locations / last mile etc. Sorry if my question is a bit too broad or vague, I am looking for more of a research / high level understanding how these bigger companies deal with such larger network optimization challenges?