For my use case, the main benefit of using manually pre-warmed Lambda instances over Fly Machines is the fact that "warm" Lambdas cost practically nothing (only have to pay for the warming events that are billed for milliseconds every few minutes). :)

This is why I want to see a similar mode of operation for Fly Machines, possibly through memory snapshots, so I can manually provide a "warm" suspend state for it to unsuspend into. In fact this would be even better than the lambda model since there would be _no_ cold starts.