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Having worked on infrastructure deployed this way, I can say this oversimplifies a bit. There's virtually never no spot capacity at all, there's no capacity at

Having worked on infrastructure deployed this way, I can say this oversimplifies a bit. There's virtually never no spot capacity at all, there's no capacity at a given bid price, for a given instance type, in a given region. You can start to scale up on-demand infrastructure using spot price as a signal, before there's literally none left, and you can also run on clusters of heterogeneous instances, and change your instance type mix when one instance type's price goes up. In the worst case you can fail out of a particular region whose spot prices have gotten too high. Lots of options.

sitkack 5y ago
No shade, but this is a very AWS specific view of cloud. Every cloud has a different resource allocation philosophy, not all the assumptions are the same.
- remram 5y ago
  Yeah, GCP spot instances don't vary in price like AWS ("The price adjustments will occur at most once a month").
  - ianburrell 5y ago
    There is no longer bidding for spot prices on AWS. They moved to model where pay the fixed spot price which isn't based on capacity. https://aws.amazon.com/blogs/compute/new-amazon-ec2-spot-pricing/ https://aws.amazon.com/blogs/compute/new-amazon-ec2-spot-pri...
    - remram 5y ago
      Interesting! I think it still updates more than once a month, but that is a significant change that I wasn't aware of, thank you.