Containers might also help to migrate virtual machines from one physical host to the other very fast, by tuning the VM subsystem. Today any page can be in the RAM or Swapped. During a container migration, we can add a third level: "on this host". That way if you want to move a 1 GB vserver/container, you wouldn't need to transfer the whole data to begin executing code.
It would help to reduce the TCP latency problem IMHO.
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