Also, if I remember correctly, in the new pricing model there will not be possible to reserve instances other than to cut down the cost; there is no guarantee that the instances will always be loaded. So for an application with low traffic, even with operational support and several reserved frontend instances, there will still be a lot of instance swapping and sluggish page loads, because in the new pricing model a reserved frontend only means a cheaper price, not that the reserved instances will be kept warm (loaded in physical memory and running). If Google keeps having too few physical servers for the number of applications (as I estimated in a previous post), then there will always be a lot of instance swapping even with the best of instance swapping algorithms, leading to poor performance and an amateurish/low-end cloud computing platform.
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